Physics Motion3 mistakes 26 Sep 2026
A runner returns to the start after a 400 m lap. What is the displacement?
Your answer: 400 m
Correct answer: 0 m
Displacement compares the final and initial position, which are the same.
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Mathematics Algebra2 mistakes 26 Sep 2026
Solve x^2 - 5x + 6 = 0.
Your answer: 1 and 6
Correct answer: 2 and 3
Factor into (x - 2)(x - 3).
Chemistry Organic Chemistry1 mistakes 26 Sep 2026
Which group identifies an alcohol?
Your answer: -COOH
Correct answer: -OH
A hydroxyl group characterizes an alcohol.