Questions
An engine pumps water through a hose pipe. Mass per unit length of water in the pipe is 100 kg/m and it leaves the pipe with velocity of 2 m/s. Power of the engine is
detailed solution
Correct option is C
mass per unit length is Ad power =Av3d= 100x 23= 800Talk to our academic expert!
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The heart of a man pumps 5 litres of blood through the arteries per minute at a pressure of 150 mm of mercury. If the density of mercury be then the power of heart in watt is:
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