Western Governors University

D846: General Physics I Lab

A study guide to WGU's D846, the physics lab where science education students practice experimentation, data analysis and clear reporting.

Updated October 2026 · 5 min read

D846 follows General Physics I with hands-on investigation. WGU's guidebook says learners develop the ability to run scientific investigations using experimentation in physics, solve problems, analyze data and draw conclusions.

The guidebook stresses accuracy and attention to detail, accurate summaries of findings, and practice identifying interconnections within systems. Written communication of results is as important as the measurements.

Course at a Glance

ItemDetails
UniversityWestern Governors University (WGU)
Course codeD846
ProgramBS Science Education (Secondary)
Size1 competency unit
CompetencyConduct scientific investigations using experimentation in physics
Companion courseD845 General Physics I

What D846 Covers

SkillWhat it looks like in physics
Applying the scientific methodQuestion, prediction, test, conclusion
Analyzing experimental dataGraphs, trends and calculated quantities such as speed or acceleration
Summarizing findings accuratelyPrecise wording that matches the data
Systems thinkingSeeing how parts of a system interact
Independent investigationExperimental technique and data analysis

Key Concepts Explained

Graphs Tell the Story

Plot the independent variable on the horizontal axis and the dependent variable on the vertical axis. A straight line suggests a proportional or linear relationship, and the gradient has meaning.

Example: You plot distance against time for a moving cart and get a straight line with gradient 0.5 m/s. The speed is 0.5 m/s. If the line curves upwards, the cart is accelerating, and you would plot speed against time next.

Uncertainty

Repeat measurements and note the spread. Say how uncertain your result is, and whether the difference from an expected value is larger than that uncertainty.

Precision in Wording

Avoid claims beyond the data. "The results suggest" is better than "this proves" for a small experiment.

Typical Assignments and How to Approach Them

The guidebook lists one competency and no task names. These are typical lab coursework elements.

Work typeWhat it testsHow to approach it
Experiment planFair test designIdentify variables and controls first
Data table and graphPresentation and analysisUnits, labels, trend line
CalculationsPhysics applied to dataShow formula, substitution, result and unit
Written summaryAccurate communicationState findings matching the evidence

Lab Report Planning Table

StageGoalEvidence to keep
BeforeUnderstand the concept and planVariables and prediction
DuringMeasure carefullyRaw data with units
AnalysisFind the relationshipGraph and sample calculation
ReportExplain what it meansClaim, evidence, reasoning

From Raw Data to Conclusion

Follow a fixed order when you analyze a physics experiment.

  1. Tabulate raw data with units and uncertainty.
  2. Plot the graph and describe its shape in one sentence.
  3. Calculate the quantity of interest from the gradient or formula.
  4. Compare with the expected value and discuss the difference.
  5. State what the result tells you about the physical principle.

Write each step in the order above, and the report almost structures itself.

Before You Submit

Worked Example: Writing a Summary of Findings

Imagine an experiment dropping a ball from several heights and timing the fall. A strong summary reads: "Fall time increased with height, and a graph of height against time squared was close to a straight line, consistent with constant acceleration.

The gradient gave an acceleration of about 9.5 m/s squared, lower than the accepted value, possibly because of reaction time in manual timing."

It reports the pattern, links it to a principle, gives a result and explains the difference without overclaiming.

Where Students Get Stuck

Study Tips for D846

How We Help with D846

Send your data, notes and rubric. A tutor can explain how to analyze results, give feedback on your draft, or show a model write-up built from sample data. For guidance, see our lab report guide.

GradeEssays is independent and not affiliated with Western Governors University. Use our help as a study aid, then complete your own work under WGU's academic integrity policy. We cannot run your experiment, invent data, take assessments or access portals, and we cannot promise a competency decision. Free revisions; full refund if late.

Make Your D846 Report Stronger

Share your data and draft. We give feedback on analysis, graphs and conclusions.

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Frequently Asked Questions

What is D846?

The physics lab following General Physics I, focused on scientific investigation, data analysis and communication, per WGU's guidebook.

How many competency units is D846?

1 in the BS Science Education guidebook.

What is the competency?

The learner conducts scientific investigations to answer questions using experimentation in physics.

How should I present data?

In a labeled table and graph with units, plus one sample calculation.

What if my result differs from the expected value?

Report it and discuss uncertainty and possible sources of error.

Can you do my lab or invent data?

No. We never create data. We offer tutoring and feedback on your own work.