alleryPower is the rate of doing:
ATime
BWork
CHeat
DMass
Answer & Solution
Correct answer: B. Work
1. Two machines may do the same work in different times.
2. Power compares work against the time taken.
3. Power is defined as the rate at which work is done.
4. So the answer is work.
_Source: syllabus Science, Ch 7 'Work, Energy, and Simple Machines'_
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