Flow rate is the volume that flows in one second
Assume one second
Use the water that flows in one second
< p> < p>The sum of the gravitational potential energythe reduction of the kinetic energy
the sum
multiplied by< /p>
two
Efficiency
Divide by one second
That's the answer
{0.5* 1*1000*1000(3*3-2*2)+ 1000 *1000*10*10}*75%*80%=6.24*10^7w
The answer should be wrong