A motor is pumping water with velocity of 20ms-1 from a pump of area of cross section 10cm2 then its average power is ( in kw)
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xgilpo coossification
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Answer:
4 kW
Explanation:
Power is the ratio of work to time.
Here, work is the kinetic energy of water.
Time is equal to 1 s.
KE = m
= . ρ.V.
= . 1000 . 20 .
. 20 . 20 J
= 4000 J
W =
= W
= 4000 W
= 4 kW
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