A machine does 600 joules of work in 3 seconds. What is its power output?
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Correct!
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Correct answer to question 12 (Mechanical Comprehension): 200 watts
Method
Power is work divided by time, so 600 / 3 = 200 watts. Two machines can do the same work while differing entirely in power, because power is about how fast the work is done.
Updated: November 2026
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