Exam-style question
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A motor does 1500 J of work in 30 seconds. What is its power output?.
- A.50 W
- B.75 W
- C.100 W
- D.150 W
Model answer
What a good answer should say
- 50 W
Explanation
Why this works
Power is calculated using the formula: P = W / t. Substituting the values: P = 1500 J / 30 s = 50 W.
This indicates the rate at which the motor does work.
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