an engine pumps water from a river 10m

Question

an below its own level and discharge it through a
nozzle of diameter 10cm with a speed of 50m/
s.find the power required assuming
a.no losses
b.70% efficiency.water weighs 10^3kgm^-3 {g=10ms^-2}
help me

Answer 1

need physics properties

Answer 2

energy/second:
mgh + (1/2) m v^2
where m = mass/second
what is mass/second?
m = 1000 kg/m^3 * pi (.05^2)m^2 * 50 m/s

Answer 3

i need the answer please

Answer 4

I need answers please

Answer 5

Answer