Apump is required to lift 800 kg of water per minute from a well 14.6 m deep and eject it with a speed of 18.2 m/s..

a. how much work is done per minute in lifting the water? b. how much in giving the water the kinetic energy it has when ejected? k =? c. what must be the power output of the pump?

a)W = 116800 J

b)KE=132496 J

c)P=4154.93 W

Explanation:

Given that

m= 800 kg/min

h= 14.6 m

v= 18.2 m/s

a)

Work done required ,W= m g h

h=height of the well

m=mass

W= 800 x 14.6 x 10                 ( take g= 10 m/s²)

W = 116800 J

b)

kinetic energy = KE

m=mass

v=velocity

KE=132496 J

c)

Pump power given as

W'=Total work done

t=time

P=4154.93 W

wavelength divides in half and speed stays the same.