Consider a river flowing toward a lake at an average velocity of 3 m/s. the river height is 90m above the lake. what is the total mechanical energy of the river water per unit mass in kj/kg?

Kinetic energy per unit of mass is

Given,

Therefore,

Now potential energy per unit mass is

Given,

Therefore,

Thus, total mechanical energy of the river water per unit mass is

OR

2b2t

explanation:

2b2t