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Physics - W.E.P. Question with Solution | TestHub

PhysicsW.E.P.PowerEasy2 minPYQ_2020

PhysicsEasysingle choice

An engine pumps water through a hosepipe. Water passes through the pipe and leaves it with a velocity of $2 m s^{- 1}$ . The mass per unit length of water in the pipe is $100 kg m^{- 1}$ . What is the power of the engine?

Options:

Answer:

Solution:

Here, Mass per unit length of water, $μ = 100 {kg m}^{- 1}$

The velocity of water, $v = 2 {m s}^{- 1}$

Power of the engine, $P = μ v^{3} = (100 {kg m}^{- 1}) {(2 {m s}^{- 1})}^{3}$

$= 800 W$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:W.E.P.Subtopic:Power

⏱ 2mℹ️ Source: PYQ_2020

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