Question

an electric pump of power life 4000 of water to a height of h in 30 min find the height​

Answer 1

Answer:

Power of pump=2kW=2000W

Time(t)=60s

Height(h)=10 m

g=10ms

We know,

Power=work done per unit time

Work done=mgh

                   =m×10×10  =100m

Power=  100m/t

2000=100m/ 60s

m=1200 kg

Hence,pump can raise 1200 kg water per minute up to 10 m height.

Explanation:

Answer 2

Answer:

18 units

If an electric iron of 1200 W is used for 30 minutes everyday, find electric energy consumed in the month of April. Therefore, The Total Electricity consumed in April month is 18 units.