pleeease help me???!?

Question

if water i pumped out of a 20m well by a pump that can produce a power of 3 KW, how many litres of water can be lifted per second (one litre of water weighs 10 N)

please help!

Answer 1

Work (energy) = Force * distance.

Force = 10 N
distance = 20 m

The dimension of Work is in Joules, which is the same as N*m, which is the same as Energy.

Power (Watts) = Energy / time (in seconds)

3000 = (20 * 10 * x) / second

Solve for x

.