Answer:

Explanation:
From the question we are told that:
Velocity of water 
Height=?
Generally, the equation for Water Velocity is mathematically given by

Therefore Height h is given as



Answer:
The work furnished by the compressor is 
The minimum work required for the state to change is 
Explanation:
The explanation to these solution is on the first, second , third and fourth uploaded image respectively
Answer:
Aerobic biological treatment process
Explanation:
Aerobic biological treatment process in which micro-organisms, in the presence of oxygen, metabolize organic waste matter in the water, thereby producing more micro-organisms and inorganic waste matter like CO₂, NH₃ and H₂O.
One way is manager changes itself and the other one is the same thing i think.