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The heart of an animal pumps 40 cc of blood per second under the pressure $$15000\ \text{N/m}^2$$. The power of the heart of the animal is
Power of a pump equals pressure times volume flow rate. Here $$40\ \text{cc/s} = 40 \times 10^{-6}\ \text{m}^3/\text{s}$$, so $$P = 15000 \times 40 \times 10^{-6} = 0.6\ \text{W}$$.
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