Answer
$E= 8.82\times 10^ W$
Work Step by Step
$1m^3$ of water = $1000kg$ of water
rate of energy production = $E$
mass rate ($m_r$) = $1200m^3/s \times \frac{1000kg}{1m^3}$
$m_r$ = $120000kg/s$
$m_r$ = $1.2\times 10^6kg/s$
Calculating the rate of energy produced by the generator:
$E =\frac{3}{4} \times m_r \times g\times h$
$E =\frac{3}{4} \times (1.2\times 10^6kg/s) \times 9.8m/s^2\times 100m$
$E= 8.82\times 10^ W$
