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प्रश्न
The heart of a deer chased by a tiger beats 200 times in a minute and does a work of 1.4 joules per beat. What is the power of heart?
संख्यात्मक
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उत्तर
\[ \text{Number of heartbeats per second} = \frac{200}{60} \]
\[ \text{Work done per second} = \frac{200}{60} \times 1.4\ \mathrm{J} \]
Work done per second = 4.67 J/s
Since 1 J/s = 1 W, the power of the heart = 4.67 W.
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