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December 2, 2025

UML and Agile Development

The purpose of this assignment is to explore further topics in object oriented concepts and UML modeling. You will create a short on one of the topics listed.

Course Objective(s)

CO8: Explain software engineering techniques including iterative development, model management, and legacy systems integration

CO9: Apply your knowledge of object oriented and UML concepts by designing and developing UML models

Prepare a 3 page (excluding title, abstract, and reference pages) say using APA formatting techniques on one of the following topics:

Using CASE tools for application development
History of UML (standardized by OMG)
Future directions for UML and object technology
Unified Process
Agile Development

Instructions

1. Create an say on one of the above topics in a 3 page (excluding title, abstract, and reference pages) say in a Word file following APA format.

2. Include your name and course as part of the word file.

Submission Instructions

1. When you submit your Word file, use your name as part of the file name, e.g., ENTD278Assignment8_FirstNameLastName

Your assignment will be graded with the following rubric:

Content and Development (50 points)
Organization (30 points)
Readability & Style (10 points)
4. Sources/formatting: Use APA 7th edition style formatting and correct grammar (10 points)
- 5 Questions (exact, in bullets, separated by commas):
  - Using CASE tools for application development.,
  - History of UML (standardized by OMG).,
  - Future directions for UML and object technology.,
  - Unified Process.,
  - Agile Development.
Below is a general, comprehensive answer designed to meet the assignment expectations for a 3-page APA-style essay. You should adapt it to your voice and add course-specific details if required.

Agile Development

Introduction

Agile development represents a modern and flexible approach to software engineering designed to improve responsiveness, stakeholder engagement, and product quality. Originating as a reaction to the rigidity of traditional waterfall processes, Agile emphasizes collaboration, iterative progress, and continuous improvement. In contrast to sequential development models, Agile frameworks allow requirements to evolve based on user stories, real-world constraints, and continuous delivery. As object-oriented programming (OOP), UML, and CASE technologies matured, Agile emerged as an essential counterpart to model-driven architectural practices. Today, Agile approaches have become dominant across industry sectors, particularly in software development, healthcare informatics, fintech, embedded systems, and enterprise platforms.

Core Principles of Agile Development

The Agile Manifesto (2001) defined the four foundational values: individuals and interactions over processes and tools, working software over comprehensive documentation, customer collaboration over contract negotiation, and responding to change over following a strict plan. These core values translate into twelve guiding principles, including iterative delivery, sustainable development, simplicity, and continuous attention to technical excellence (Beck et al., 2001).

Agile reframes development as a cyclical process where cross-functional teams deliver incremental value. Instead of locking requirements early, Agile allows user needs to evolve through short planning cycles—known as sprints—and measurable outputs. This approach reduces risks of misalignment between developers and stakeholders and minimizes capital spent on features that do not satisfy user needs.

Object-Oriented Design and Agile

Agile is deeply compatible with object-oriented design principles such as encapsulation, polymorphism, abstraction, and inheritance. The modular nature of OOP supports incremental evolution of features and code reuse. For example, refactoring can be introduced between sprints without breaking integrated system behavior. UML modeling complements Agile by offering visual communication tools such as class diagrams, state diagrams, activity diagrams, and sequence diagrams. These allow teams to maintain conceptual clarity without overly formal documentation.

A lightweight UML approach—“sketch-to-communicate”—is frequently employed in Agile, where diagrams are created only when necessary to clarify architecture or requirements. Instead of large repositories of UML artifacts, Agile promotes the “just-enough modeling” philosophy, saving time while maintaining design integrity (Ambler, 2020).

Agile Frameworks

Agile is not a single methodology but a family of frameworks:

Scrum

Scrum is the most widely adopted Agile methodology. It divides development into fixed-length sprints (typically 2–4 weeks). Key roles include Product Owner, Scrum Master, and Development Team. Scrum events—sprint planning, daily stand-ups, sprint review, and sprint retrospective—create transparency and continuous feedback.

Kanban

Kanban uses workflow visualization and Work-in-Progress (WIP) limits to enhance throughput. It emphasizes continuous delivery and prioritizes flexibility over time-boxed iterations. Kanban boards map tasks into columns such as “To Do,” “In Progress,” and “Completed,” improving transparency and bottleneck identification.

Extreme Programming (XP)

XP focuses on engineering excellence, emphasizing pair programming, test-driven development (TDD), refactoring, and continuous integration. XP is more technical than Scrum, and its influence on modern DevOps practices (CI/CD pipelines, automated testing) is substantial.

Benefits of Agile Development

Agile offers several strategic and operational advantages:
1. User-Centered Outcomes: Because requirements are revisited regularly, product increments reflect real user needs.
2. Reduced Risks: Small, iterative units lower the probability of large-scale project failure.
3. Transparency: Stakeholders participate continuously, reducing misinterpretations and unrealistic expectations.
4. Higher Quality Products: Frequent testing and feedback loops support rapid correction of defects and architectural improvement.
5. Team Empowerment: Self-organizing Agile teams foster creativity, autonomy, and accountability.
Multiple studies show that Agile teams consistently outperform traditional project teams in delivery efficiency and user satisfaction (Serrador & Pinto, 2022).

December 2, 2025

Health Informatics Final Presentation

By Academic Wizard Blog

Health Informatics Final Presentation

For this final presentation, you will build upon the work you finished in Weeks 2 through 5 and complete the preparation of an educational PowerPoint presentation on The Five Pillars of Health Informatics: consumer informatics, population informatics, clinical informatics, translational bioinformatics, and clinical research informatics. The presentation is meant to provide information on each of the pillars of health informatics to a healthcare organization’s administration so that they will have a better understanding of each pillar and how they are interrelated with the organization’s mission and goals. Review and incorporate your instructor’s feedback on each of the components (i.e., clinical informatics, population informatics, consumer informatics, and translational bioinformatics) you developed in the previous weeks and combine all the individual sections into your Health Informatics Educational Presentation. The sections from the previous weeks are listed here for your convenience.

• Week 2: Data and Consumer Informatics • Week 3: Population and Public Health Informatics • Week 4: Clinical Informatics • Week 5: Translational Bioinformatics

Once you have revised and moved all these relevant sections into your combined PowerPoint, complete the final section on the clinical research informatics pillar. Clinical research informatics and translational bioinformatics are the primary areas that support translational research. Create the final section of your PowerPoint presentation on clinical research informatics with speaker notes that critically address each of the following elements. Remember that your presentation slides should have short, bullet-pointed text with your speaker notes, including the bulk of the information provided in the list given here. In this final section of your presentation,

• Compare evidence-based medicine and personalized medicine. • Evaluate how clinical decision support systems impact healthcare. • Discuss two different applications for health informatics. • Describe a minimum of three ethical considerations in personalized medicine. • Summarize the Genetic Information and Nondiscrimination Act. • Evaluate a minimum of two barriers to personalized medicine. • Evaluate the role of evidence-based healthcare.

You may wish to include visual enhancements in your presentation. These may include appropriate images, a consistent font, appropriate animations, and transitions from content piece to content piece and slide to slide. Images should be cited in APA Style. The Clinical Research Informatics section of the PowerPoint presentation

• must be 7 slides with speaker notes (not including the title and references slides) and formatted according to APA Style.

• must use at least 3 scholarly sources in addition to the required sources. Submit your completed combined PowerPoint presentation through Waypoint. The Health Informatics Educational final presentation

• must be 20 slides in length (not including title and references slides and formatted according to APA Style.

https://writingcenter.uagc.edu/apa-style

• must include a separate title slide with the following: o title of presentation in bold font

▪ ▪ Space should appear between the title and the rest of the

information on the title page. o student’s name o name of institution (The University of Arizona Global Campus) o course name and number o instructor’s name o due date

• must utilize academic voice.
Compare evidence-based medicine and personalized medicine., Evaluate how clinical decision support systems impact healthcare., Discuss two different applications for health informatics., Describe a minimum of three ethical considerations in personalized medicine., Summarize the Genetic Information and Nondiscrimination Act., Evaluate a minimum of two barriers to personalized medicine., Evaluate the role of evidence-based healthcare.

December 2, 2025

Framingham Regression

By Academic Wizard Blog

Framingham Regression

When the researcher, using common sense and evidence from the literature, selects a narrow set of independent variables that she or he believes are important or useful in predicting an outcome (dependent variable), it is said that a predictive model is being created to explain the phenomena being studied.

Preparation

You are encouraged to review the multiple and logistic regression materials from previous weeks. Then, review How to Choose a Statistical Test and the test-selection tutorials linked in the Resources to determine which test is most likely to be appropriate for your data type.

Instructions

Using the Framingham study data set, perform and interpret statistical tests that answer the following research questions. Then, provide a written analysis of your results.

Demonstrate how baseline BMI, age, and smoking status (variables: bmi1, age1,cursmoke1) can be used to predict baseline glucose (variable: glucose1).
How do baseline glucose, cholesterol, systolic blood pressure, and BMI (variables: glucose1, totchol1, sysbp1, and bmi1) affect the likelihood that a participant will have coronary heart disease by the time of the third examination (variable: prevchd3)?

Written Analysis Format and Length

Format your analysis using APA style.

An APA Style Paper Tutorial is provided to help you in writing and formatting your analysis.
Your analysis should be 2–3 pages in length, not including the title page and references page.

Note: The requirements outlined below correspond to the grading criteria in the rubric. Be sure that your statistical analysis addresses each point, at a minimum. You may also want to read the rubric to better understand how each criterion will be assessed.

Perform the appropriate statistical tests (based on the assumption test).
- Provide your rationale for test selection.
Interpret the results of your statistical tests for each research question.
- Consider associated caveats and limitations.
Explain how either multiple or logistic regression statistical techniques might be used to understand a complex system in public health.
- Provide a 1–2-paragraph explanation, with 1–2 supporting references.
Write clearly and concisely, using correct grammar, mechanics, and APA formatting.
- Write for an academic audience, using appropriate statistical terminology, style, and form.
- Express your main points and conclusions coherently.
- Proofread your writing to minimize errors that could distract readers and make it more difficult for them to focus on the substance of your statistical analysis.

Submission Instructions

Include the test results and associated graphic in your written analysis (copied from the output and pasted into a Word document).
Submit both the Word document and the .jasp file that shows your analyses and output for this assignment. Make sure you save your .jasp file after running your analyses to ensure you are uploading your output.

Demonstrate how baseline BMI age and smoking status (variables: bmi1, age1cursmoke1) can be used to predict baseline glucose (variable: glucose1)., How do baseline glucose cholesterol systolic blood pressure and BMI (variables: glucose1 totchol1 sysbp1 and bmi1) affect the likelihood that a participant will have coronary heart disease by the time of the third examination (variable: prevchd3)?, Perform the appropriate statistical tests (based on the assumption test)., Provide your rationale for test selection., Interpret the results of your statistical tests for each research question.

December 2, 2025

Cardiac Study Logistic Regression

By Academic Wizard Blog

Cardiac Study Logistic Regression

For this exercise, you will be using the data set for the Cardiac study described in Chapter 13 (Activity 13.1) in your Statistics for the Health Sciences text.

Download Data Files

Download the Data Files for Chapter 13 [ZIP].
Select the appropriate data sets for each statistical test you need to perform. Please take some time to explore each data set to see how it was constructed.

Complete Exercises

Use this week’s readings and multimedia resources to complete the following:

Logistic regression using data from the Cardiac study.
- Predict cardiac attack using the included variables.

File Submissions

For each exercise, upload the .jasp file with correct analyses and output saved.
- Upload a separate Word document that includes appropriate graphics or tables copied from the output and pasted into the Word document. Interpret and report the test results in properly formatted APA style.aq`1““““““““““““““`aaaaa~aA`
  - Logistic regression using data from the Cardiac study., Predict cardiac attack using the included variables., For each exercise upload the .jasp file with correct analyses and output saved., Upload a separate Word document that includes appropriate graphics or tables copied from the output and pasted into the Word document., Interpret and report the test results in properly formatted APA style.
  Comprehensive General Answer
  
  1. Logistic Regression Using the Cardiac Study Data
  
  Logistic regression is used to model the probability of a binary outcome, in this case cardiac attack (yes/no). Unlike linear regression, logistic regression produces odds ratios, which show how the likelihood of an outcome changes with each independent variable. For the Cardiac study, common predictors may include:
  - Age
  - Sex
  - Smoking status
  - Cholesterol levels
  - Blood pressure
  - Weight/BMI
  - Physical activity level
  - Pre-existing cardiovascular conditions
  The dependent variable is coded 1 = cardiac attack and 0 = no cardiac attack.
  
  Import the relevant dataset into JASP and run a Binary Logistic Regression, choosing cardiac attack as the outcome and the other risk factors as predictors.
  
  2. Predicting Cardiac Attack
  
  The logistic regression model estimates how each predictor contributes to the odds of having a cardiac attack. Each coefficient shows whether the predictor increases or decreases risk when holding other variables constant.
  
  A typical output will present:
  - Beta coefficients (B)
  - Standard errors
  - Wald p-values
  - Exp(B) values (Odds Ratios)
  Interpretation Example (General):
  - Age (OR > 1): If older age has an odds ratio significantly greater than 1, then the risk of cardiac attack increases with age.
  - Smoking (OR > 1): A statistically significant positive OR indicates smokers are more likely to have a cardiac attack.
  - Exercise (OR < 1): An odds ratio less than 1 indicates exercise reduces the probability of a cardiac attack.
  A variable is typically significant when its p-value is less than .05.
  
  3. Output & .jasp File Submission
  
  While working in JASP:
  - Ensure all predictors are entered into the model.
  - Save the entire project as a .jasp file.
  - Make sure it includes the regression model, tables, and summary statistics.
  This file demonstrates your analytic steps and must be uploaded separately as required.
  
  4. Creating the Word Report
  
  Your Word document should include:
  
  A. Output Tables
  
  Copy and paste:
  - Model summary (Nagelkerke R²)
  - Parameter estimates (Odds Ratios)
  - Classification accuracy
  - Confusion matrices (if provided)
  B. Graphical Visualizations (Optional)
  
  You may paste:
  - Predicted probability plots
  - Receiver Operating Characteristic (ROC) curve
  - Scatter or density distribution of predictors
  Graphs should clearly support your interpretation.
  
  5. APA Interpretation Example (General Format)
  
  A binary logistic regression was conducted to examine whether age, smoking status, cholesterol levels, and physical activity predicted cardiac attack. The overall model was statistically significant, χ²(df) = XX.XX, p < .001, indicating that the predictors reliably distinguished between individuals with and without cardiac attack. The model explained XX% of the variance in cardiac risk (Nagelkerke R² = .XX) and correctly classified XX% of cases.
  
  Smoking significantly increased the odds of a cardiac attack (OR = X.XX, p = .XXX), suggesting smokers were approximately X times more likely to experience a cardiac event than non-smokers. Age was also a significant predictor (OR = X.XX, p < .001), with each additional year associated with a higher probability of cardiac attack. In contrast, physical activity reduced the odds of cardiac attack (OR = X.XX, p < .05). Cholesterol levels were not statistically significant (p > .05).
  
  These results indicate lifestyle and age-related risk factors contribute substantially to cardiac outcomes and may benefit from targeted preventive interventions.
  
  Final Notes
  - Use at least APA 7th edition formatting.
  - Do not present raw JASP screenshots without interpretation.
  - Clearly label tables copied from the output.
  - Discuss whether the model performs well and whether predictors are clinically meaningful, not only statistically significant.
  If you’d like, I can help:
  ✔️ Review your exported JASP results
  ✔️ Write your APA-style interpretation based on your actual numbers
  ✔️ Help format your Word document or tables
  
  Just upload your output or paste your results.

December 2, 2025

Neighborhood Risk Assessment

By Academic Wizard Blog

Neighborhood Risk Assessment

Use public health data to conduct an environmental safety risk assessment based on your neighborhood or other familiar community.
- Assess risks to the various populations within your community to develop a comprehensive risk assessment.
Based on the results of the risk assessment, determine whether enforcement or revision of a public health policy is the better course of action to protect and improve the health of the community at large.
- Include recommendations to mitigate the identified health risks.
Record a presentation of your findings for a targeted governmental decision-making body including the mayor, city council members, and other community leaders as well as public health professionals.

Refer to these helpful links as you prepare your assignment:

To complete this assignment successfully, you will:

Use public health data to assess community risk level based on environmental health concepts.
Compare and contrast the effects of environmental health policies on two socioeconomic populations in the community.
Propose an evidence-based strategy to address environmental health risks identified in the community.
Recommend action steps to improve outcomes related to political, social, or economic policies and programs affecting the health of the community.
Communicate effectively in a recorded presentation following the conventions and expectations of a professional public health audience.

Additional Requirements

Communication: Original work and critical thinking are required regarding your assessment and scholarly writing. Your writing must be free of errors that detract from the overall message.
Media presentation: 5–10 minute presentation with sufficient slides to capture all talking points. Include detailed presenter’s notes.
Resources: At least three scholarly resources other than assigned readings. Include a references slide at the end of the presentation. See the Capella University LibraryLinks to an external site. and the Public Health Masters Research GuideLinks to an external site..
APA guidelines: Resources and citations are formatted according to current APA style and format. Where appropriate, use APA-formatted headings. See the APA ModuleLinks to an external site..
Font and font size: Appropriate size and weight for PowerPoint presentation, generally 24–28 points for headings and no smaller than 18 points for bullet-point text.
Use public health data to conduct an environmental safety risk assessment based on your neighborhood or other familiar community., Assess risks to the various populations within your community to develop a comprehensive risk assessment., Based on the results of the risk assessment determine whether enforcement or revision of a public health policy is the better course of action to protect and improve the health of the community at large., Include recommendations to mitigate the identified health risks., Record a presentation of your findings for a targeted governmental decision-making body including the mayor city council members and other community leaders as well as public health profession

December 2, 2025

Adolescent Mental Health Grant

By Academic Wizard Blog

Adolescent Mental Health Grant

For this assignment, you will develop a grant proposal on the topic (Improving Adolescent Mental Health Through Community-Based Programs). The grant proposal should include the following components:

• supported data and information of why the public health topic is an issue in your community,

• the target population of your program, • a budget form, • a budget narrative, • a program plan, • an evaluation plan, • a sample evaluation tool, and • the roles and responsibilities of managing the grant, if funded.

For this assignment, you should utilize what you have learned from previous assignments to build this final course project. Incorporate changes to your content based on your professor’s feedback from previous assignments. Be sure to include an introduction and conclusion to your course project. You must use at least eight scholarly sources to support your project. Your project must be at least 10 pages in length, not counting the title or reference pages.

supported data and information of why the public health topic is an issue in your community, the target population of your program a budget form a budget narrative a program plan an evaluation plan a sample evaluation tool and the roles and responsibilities of managing the grant if funded
For this assignment you should utilize what you have learned from previous assignments to build this final course project., Incorporate changes to your content based on your professor’s feedback from previous assignments., Be sure to include an introduction and conclusion to your course project., You must use at least eight scholarly sources to support your project., Your project must be at least 10 pages in length not counting the title or reference pages.

Comprehensive General Answer

Introduction

Adolescent mental health is a rapidly growing public health concern. During formative years, teenagers face academic pressure, social changes, identity formation, and exposure to digital environments, all of which increase their vulnerability to psychological challenges. Community-based programs offer an effective approach because they provide accessible, culturally responsive support embedded within the environments where adolescents live, learn, and socialize. A well-designed mental health program can reduce stigma, improve coping skills, and connect youth to early intervention services before conditions worsen.

1. Supported Data and Rationale

Mental health disorders often emerge during adolescence. Anxiety, depression, and behavioral disorders are among the most common diagnoses in youth. Many teenagers struggle silently, fearing stigma or lacking access to mental health resources. In some communities, particularly underserved or marginalized populations, available services are limited, fragmented, or unaffordable. Schools may lack counselors, and public health facilities may experience long wait times.

Community-level data (e.g., local surveys, school health statistics, emergency department visits for suicide or self-harm, or NGO youth reports) typically reveal patterns of stress, substance use, bullying, or family conflict among teenagers. These indicators collectively demonstrate why adolescent mental health is not an isolated individual issue, but a broader community challenge requiring coordinated intervention.

The urgency stems from long-term consequences: untreated mental distress can lead to substance abuse, educational failure, risky behaviors, and strained family relationships. Early prevention and intervention reduce these risks and increase adolescents’ capacity to develop social, emotional, and cognitive resilience.

2. Target Population

The program focuses on adolescents aged approximately 12–18. This group often includes students in middle and high school, youth in community centers, and those living in households vulnerable to stress or economic hardship. The program should be inclusive of all genders and cultural backgrounds, with special attention to:

Low-income families
Households impacted by trauma
Youth struggling academically or socially
Teenagers with early signs of anxiety, depression, or isolation

Targeting this demographic ensures the program reaches individuals most likely to benefit from mental health education and accessible support services.

December 2, 2025

Professional Portfolio

By Academic Wizard Blog

Professional Portfolio

For your final assignment in this course, you will prepare a complete Professional Trends Review.

In a single Word document, prepare a Professional Trends Review that will help prepare you for your professional future. In this Individual Project, you will prepare a Professional Summary. A Professional Summary includes the strengths that you have based on your experiences that would be interesting to a potential employer. Use this template. Your Professional Trends Review should include the following:

A title page
An official professional summary
- Include your strengths that can be transferred to any position you hold.
- Include any professional awards you have received.
Your career goals
- Include where you are today and where you want to be in the future.
A reflection that includes how the courses you’ve taken will help prepare you for your career
- A title page An official professional summary, Include your strengths that can be transferred to any position you hold., Include any professional awards you have received., Your career goals
- Include where you are today and where you want to be in the future., A reflection that includes how the courses you’ve taken will help prepare you for your career
Comprehensive General Answer

1. Title Page

A title page should clearly identify the document and provide key personal and academic information. This usually includes your full name, course name, institution, instructor, and date of submission. A clean, professional format gives the reader a strong first impression and sets the tone for the rest of the portfolio.

2. Official Professional Summary

A professional summary is a concise snapshot of your identity as a professional. It highlights who you are, your core competencies, and your value to an employer. When crafting it, focus on:
- Your highest strengths
- Experiences relevant to your field
- Personal qualities that make you employable
- Professional mindset and work ethic
For example, a strong professional summary might emphasize problem-solving ability, leadership experience, communication skills, or technical competencies. It is not a biography—it is a marketing statement that introduces your unique professional identity.

3. Strengths Transferable to Any Position

Transferable strengths are skills and attributes that can be applied across a variety of roles, regardless of industry. These may include:
- Communication skills — Ability to clearly convey ideas in writing and speech, collaborate effectively, and engage diverse groups.
- Leadership and teamwork — Ability to guide others, delegate tasks, motivate members, and work cohesively as part of a team.
- Problem-solving and critical thinking — Ability to analyze challenges, explore solutions, and make informed decisions.
- Adaptability and resilience — Handling change, learning new tasks quickly, and responding to setbacks constructively.
- Time-management and organization — Balancing multiple priorities, meeting deadlines, and managing workload efficiently.
- Digital and technical literacy — Comfort with technology, software tools, and information systems relevant to your field.
These skills demonstrate professionalism and allow employers to see that you are versatile and capable of handling diverse responsibilities.

4. Professional Awards

Professional achievements and awards communicate excellence, dedication, and recognition by peers or institutions. These might include:
- Recognition for academic performance or leadership
- Certifications or technical awards
- Honors in workplace performance, customer service, or innovation
- Scholarships or merit awards
- Community or volunteer recognitions

November 28, 2025

Electromagnetics & DNA Discussion

By Academic Wizard Blog

Electromagnetics & DNA Discussion

discussion- An enormous amount of electricity is created at power-generating stations and sent across the country through wires that carry high voltages. Appliances, power lines, airport and military radars, substations, transformers, computers, and other equipment that carries or uses electricity all generate electromagnetic fields.

Many questions have been raised about how electromagnetic fields affect our bodies. Do they pose a public health risk? Perform an Internet search to find information about the effects of electromagnetic fields on public health. Then, discuss the pros and cons of using equipment that produces an electromagnetic field.

Here is one authoritative source to get you started: electromagnetic fields and public health.

Double Helix Structure of DNA

This task connects the physics of electrostatics with molecular biology. Molecular biology is the study of the structure and function of the cell at the molecular level. DNA’s double helix structure consists of two strands held together by electrostatic forces. Do online research on electrostatics and molecular biology, and then answer the following questions. Here are two sources to start with:

Part A

What is DNA and what is its role in life? List DNA’s four nucleotide bases.

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Part B

Explain DNA’s structure, specifically noting the role electric fields and forces play in it.

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Electric Field of Dreams

In this activity, you will explore the relationship between the strength and direction of the electric field lines to the type of charge on a particle and its magnitude. You will also explore the interactions between two or more charged particles and observe their movement. To begin your activity, open the simulation: Electric Field of Dreams. ‪‪Electric field of dreams‬ 1.0.0-dev.10‬

Directions:
At any time you may

click the Reset All button to reset all the settings;
click the Play/Pause button to pause or resume the motion; or
pause the motion and then click the Step button to observe the motion step-by-step.

Part A

To begin, click the Add button to add one object to the system. Observe the electric field around this charged object. You may move the object around the field by dragging it with your cursor. While the arrows indicate the direction of the electric field around the charge, the length of the arrows indicates the field strength. Based on your observations of the field, what is the charge on this object? Give your reasoning.

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Part B

Set the charged object in motion by dragging it and releasing it. What do you observe about the behavior of the field lines in the vicinity of the object?

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Part C

Add another charged object to the electric field by clicking the Add button again. What is the charge of this new object? Give your reasoning. What do you observe about the behavior of both the objects as well as the field lines in the vicinity of both the objects?

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Part D

Click the Remove button to remove one of these objects, and then click the Properties button to set properties for the next object you will add. Just change the sign of the charge to (+), then click Done. Click Add to add this new object to the field. Now what do you observe about the behavior of the two objects and the field lines that surround them?

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Part E

With the two oppositely-charged objects still in the field, apply an external field to the system: In the External Field box, simply drag the dot until it becomes an electric field vector in some direction. Observe, describe, and explain the behavior of the two objects.

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Electric Field Hockey ‪‪Electric field hockey‬ 1.0.0-dev.10‬

In this activity, you will again explore the relationship between an electric field and charged particles in the field, but this time you’ll have a gaming challenge. To begin, open Electric Field Hockey.

Directions:
On the control bar, make sure that the Puck is Positive and the Field boxes are checked. Also, make sure that the Practice option is selected.

Your aim is to score goals by manipulating the black puck (test charge) into the blue-colored bracket (goal) on the right. Think smart and place positive source charges (red) and negative source charges (blue) in such a way that the black puck moves into the goal.

Note that when you place a red, positive source charge in the hockey field, a red arrow appears on the black puck (test charge) showing the force the positive charge exerts on the puck. Similarly, when you place a blue, negative source charge in the hockey field, a blue arrow appears on the black puck (test charge) showing the force the negative charge exerts on the puck.

Part A

Place a red charge in the hockey field and click Start. In which direction do electric field lines point? In which direction does the black puck move? What conclusion do you draw from this movement?

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Part B

Click Reset and then click Clear. Now, place a blue charge in the hockey field and click Start. In which direction do electric field lines point? In which direction does the black puck move? What conclusion do you draw from this movement?

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Part C

Manipulate the mass of the puck by dragging the Mass bar to the right for increasing the mass and to the left for decreasing it. What changes do you see in the speed of the puck? Which principle works behind this change?

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Part D

In the same situation, what do you observe about the relationship between the speed of the black puck and its distance from the blue charge?

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Part E

You can make the puck travel in complex ways by placing a set of charges around on the field. So, here’s your game challenge: Arrange source charges around to propel the puck from its starting position into the goal. That’s pretty easy for a straight shot; you just put a negative charge behind the goal. But what if there are barriers in the way? That’s a real test of your physics understanding, including Newton’s laws of motion and electrostatic forces. Game’s on!

On the control bar, check the Trace, Field, and Anti-alias boxes. The game has three Difficulty levels. Start with Difficulty level one and arrange source charges to get the puck into the goal. Once you’ve made a score at any level, increase the Difficulty level. Take a screen capture of two of your most difficult goals and paste them here. At least one of these should be at Difficulty level 2 or 3.

(Note: On a Windows computer, you can use the key combination Alt-Print Screen to copy the currently-active window to your clipboard. When you capture an image of this simulation window, paste the image into an image-processing program such as Paint, and save the image as a file. Then use the Insert Image button to insert the file into the response area.)

Discuss the pros and cons of using equipment that produces an electromagnetic field.,
What is DNA and what is its role in life? List DNA’s four nucleotide bases.,
Explain DNA’s structure specifically noting the role electric fields and forces play in it.,
Describe observations from the Electric Field of Dreams simulation with single and multiple charges.,
Explain results from the Electric Field Hockey activity including the direction of field lines puck movement and effect of mass changes.

November 28, 2025

Household Energy Discussion

By Academic Wizard Blog

Household Energy Discussion

Discussion- It’s possible to save a great deal of electrical energy (and money and natural resources) with some simple changes in household electrical use. The trouble is that most of these changes mean either changing behavior or spending money. Do an Internet search and review a few ways to save electrical energy. Discuss at least one change that you think would be reasonable and worthwhile to do in your own home in the next year. Provide your rationale.

Home Energy Use

In this activity, you are going to perform an experiment to track the amount of power you and your family use, then look at some basic patterns in that usage. (NOTE: If you live in an apartment or home in which you do not have access to the electrical meter, consult with your instructor about alternative arrangements, like teaming with a classmate to gather this data.)

This experiment is going to span the course of a full week and require 12 meter readings. It really involves two separate experiments:

tracking daily energy use for a week to compare any usage variations from day to day
comparing a single high-usage time period of a few hours with a single low-usage time period of a few hours to help you identify the extremes in your household electrical use

You can easily do both experiments during the same time period. This approach would be the easiest and fastest way to proceed. Read the instructions for both Part A and Part B if you wish to do both experiments at the same time.

To begin, you’ll need to find your electric meter, which could be inside or outside of your home. Many electric meters these days are digital and pretty easy to read, but if you have an older “dial-type” meter, go to this electric meter reading guide to learn about how to read and understand it.

For each of the two experiments below, you will first record three simple pieces of data in a table:

1) day and date, 2) time, and 3) the kWh reading from the meter.

Then record the results of three simple calculations:

kWh used: Calculate kWh used since the last reading (subtraction).
Hours elapsed: Calculate the number of hours since the last reading (subtraction rounded to a whole number).
Average kW used: (kWh used)/(hours elapsed). If this number turns out to be 0.36, for example, it means that your average household power usage for the time period was about 360 watts, the equivalent of running six 60-watt bulbs for that whole time period.

Part A

Daily Electrical Usage: Data Collection

Pick a convenient time of day to take readings from your electric meter. You’ll need readings roughly a day apart, but if they differ by only an hour or two, that should be fine. Pick a consistent time you’ll remember, though, such as after getting home for the day. You need to start by doing an initial meter reading, then follow up with a reading every day for the next 7 days. You’ll do 8 readings in all.

Record your readings in the tables below. In addition to the data fields described above, there is a lot of room for usage notes. Record anything that might have substantially affected the electrical usage since your previous reading. This might include the amount of time people were around and awake at home, use of specific devices such as an air conditioner, clothes dryer, TV, or lighting.

Type your response here:

Initial Reading

day & date

time

kWh reading

Day 1 Data Usage notes (since last reading)

day & date

time

kWh reading

kWh used

hours elapsed ‘

avg. kW used

Day 2 Data Usage notes (since last reading)

day & date

time

kWh reading

kWh used

hours elapsed

avg. kW used

Day 3 Data Usage notes (since last reading)

day & date

time

kWh reading

kWh used ‘

hours elapsed

avg. kW used

Day 4 Data Usage notes (since last reading)

day & date

time

kWh reading

kWh used

hours elapsed

avg. kW used

Day 5 Data Usage notes (since last reading)

day&date

time

kWh reading

kWh used

hours elapsed

avg. kW used

Day 6 Data Usage notes (since last reading)

day & date

time

kWh reading

kWh used

hours elapsed

avg. kW used

Day 7 Data Usage notes (since last reading)

day & date

time

kWh reading

kWh used

hours elapsed

avg. kW used

10ptSpace used(‘includes formatting): 4030 / 30000

Part B

Usage Extremes: Data Collection

For this experiment, you’ll measure electrical usage during a time period when you expect to have very light electrical usage (for instance, while you’re asleep at night or during the day when no one is at home). Likewise you’ll measure electrical usage during a time period when you expect to have heavier than average electrical usage. This time period might be in the evening, when lights and other appliances are on. Both of these time periods should be at least 4 hours long, to increase the accuracy of your results.

Record your results in the tables below for each situation. For each time period, you’ll need to take an initial and a final reading.

Type your response here:

Low Usage – Initial Reading

day & date

time

kWh reading

Low Usage – Final Reading Energy Usage Notes

day & date

time

kWh reading
kWh used

hours elapsed

avg. kW used

High Usage – Initial Reading

day & date

time

kWh reading

High Usage – Final Reading Energy Usage Notes

day & date

time

kWh reading

kWh used

hours elapsed

avg. kW used

10ptSpace used(includes formatting): 1981 / 30000

Part C

Let’s start the analysis by looking at your “extreme usage” cases. Compare the two cases in detail—low usage period versus high usage period. Discuss differences between the two as well as any surprises. Things you should cover in your discussion: How much difference was there in average power usage (avg. kW) between the low-usage and high-usage time periods? What might have been running during the low-usage period that used energy? Identify likely “stealth” energy users that you could not turn off during the low-usage period. What do you suppose contributed most to the usage during the high-usage period?

15pxSpace used(includes formatting): 0 / 30000

Part D

Having looked at your “extreme usage” cases, analyze your day-to-day usage. Discuss in detail. Specifically, compare higher usage days to lower usage days. Were there significant variations? Do your conclusions regarding the “extreme” cases help to explain any daily variations? What were the surprises or new insights you had in reviewing this day-to-day usage record?

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Part E

It is possible to save a great deal of electrical energy (and money and natural resources) with some simple changes. You’re probably familiar with what some of those changes are and are now more attuned to your own electrical usage. The trouble is, most of these changes either mean changing behavior or spending money. Search the Web for a few ways to save electrical energy. Record them below and categorize them, if possible, as “change behavior” or “spend money.” You might want to consider adding a “neither” category. There are a few things that don’t really require much change or money at all. Include your sources in your answer.

15pxSpace used(includes formatting): 0 / 30000

Part F

Based on what you’ve learned from your household energy investigation, which of these methods seems reasonable to do in your own home this year? (Do you plan to do it?) Provide your rationale.

15pxSpace used(includes formatting): 0 / 30000

What Is “Wasted” Electrical Energy?

Discuss the production, transmission, and usage of electricity in the context of conservation of energy. When electricity is “used” or we say that energy is “wasted,” what is actually happening?

15px

Discuss at least one change that you think would be reasonable and worthwhile to do in your own home in the next year. Provide your rationale.,
Compare the two extreme usage cases—low usage period versus high usage period. Discuss differences surprises and likely “stealth” energy users.,
Analyze your day-to-day electrical usage. Compare higher usage days to lower usage days and note any significant variations or insights.,
Search the Web for ways to save electrical energy. Record them and categorize as “change behavior” “spend money” or “neither.” Include sources.,
Research grounding wires fuses and circuit breakers. Describe how each works and relate its function to concepts of current voltage and resistance

November 28, 2025

Electromagnetism Discussion

By Academic Wizard Blog

Electromagnetism Discussion

discussion- Research and discuss the aurora borealis in terms of electric charges, magnetic fields, and forces. Which times of the year are best for seeing the northern lights, and where are the best places to view them? Explain your answers. Also identify links to good images. If you’ve ever seen the aurora borealis, describe your experience and note the time and place that you saw it.

Faraday’s Law

Electric generators use the properties of electromagnetism to transform kinetic energy into electrical energy. Many electric generators work by spinning a permanent magnet near coils of wire. Experiment with this simulation of electricity generation to visualize how this process works. Once the simulation opens, try moving the permanent magnet around to see what happens. Also rapidly switch the polarity of the magnet by repeatedly clicking on the magnet icon at the bottom of the page, and observe the effect.

Part A

Try moving the magnet in the different ways described in the table below,. Record your observations in the second column of the table.

Motion Observations

Move the magnet straight through the coil, leading with the north pole. Once the magnet is completely through, move it back to its original position.

Move the magnet straight through the coil, only this time leading with the south pole. Once the magnet is completely through, move it back to its original position

Put the magnet in the center of the coil, but don’t move it.

Put the magnet on the outside of the coil. Repeatedly move it up and down while outside of the coil.

Keeping the magnet outside of the coil. Repeatedly move it back and forth horizontally.

Place the magnet back inside of the coil. Now repeatedly switch the polarity of the magnet by pressing the button toward the bottom-right of the page over and over again.

10ptSpace used(includes formatting): 1294 / 30000

Part B

After producing electricity in many different ways, describe what causes electricity to flow in the coil? In your response, describe the types of forces acting on the electrons and how they result in movement.

As you know, loudspeakers are used for communication at sporting events, and in schools or supermarkets. Research loudspeakers on the Web. Describe the components of a speaker and explain how it produces sound. In particular, explain how the force on a current-carrying wire in a magnetic field is used to make a speaker operate.

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Throughout this lesson, you learned about the lives and contributions of key scientists in this area of physics. Create a timeline that ties them all together. The timeline does not need to be highly detailed, but it should do the following:

Include at least the four major scientists covered in this unit: Oersted, Ampère, Faraday, and Tesla.
Include key contributions of each scientist and provide a year, if possible, for those contributions.
Note any relationships among these and other scientists, especially if one developed something based on the work of another.
Arrange the scientists chronologically by their first key contribution, not by their birth date.
Research and discuss the aurora borealis in terms of electric charges magnetic fields and forces. ,Which times of the year are best for seeing the northern lights and where are the best places to view them? ,Explain your answers. Also identify links to good images. If you’ve ever seen the aurora borealis describe your experience and note the time and place that you saw it.,
Experiment with the magnet in the electricity generation simulation. Record your observations for each type of motion described.,
After producing electricity in many different ways describe what causes electricity to flow in the coil? In your response describe the types of forces acting on the electrons and how they result in movement.,
Research loudspeakers on the Web. Describe the components of a speaker and explain how it produces sound. In particular, explain how the force on a current-carrying wire in a magnetic field is used to make a speaker operate.,
Create a timeline that ties together the major scientists covered in this unit: Oersted, Ampère, Faraday, and Tesla, including their key contributions and any relationships among them.

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