Physicsmedium · Past Paper
What is the power of a heart that beats 72 times a minute and does 1 J of work per beat?
A1.2 W
B72 W
C1 W
D60 W
✓ Correct Answer: A — 1.2 W
Total work per minute = 72 J. Power = Work / Time = 72 J / 60 s = 1.2 W.
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