Physics, asked by mallikarjun3614, 8 months ago

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)

Answers

Answered by kavitachauhan62
0

Answer:

xgilpo coossification

Answered by bansalindu
0

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 = \frac{1}{2}mv^{2}

  = \frac{1}{2} . ρ.V.v^{2}

  = \frac{1}{2} . 1000 . 20 . \frac{10}{10000} . 20 . 20 J

  =  4000 J

W = \frac{KE}{T}

   = \frac{4000}{1} W

   = 4000 W

   = 4 kW

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