When water from a dam passes through, turbines spin and those turbines generate electricity. This would make C the better answer.
Answer:
The person is running at a speed of 2.564 m/s
Explanation:
Given;
mechanical energy dissipated per kilogram per step, E/kg/S = 0.6 J/kg/S
mass of the person, m = 52 kg
power developed by the person, P = 80 W
mechanical energy of the person per step, E = 0.6 J/kg x 52 kg
= 31.2 J
mechanical energy for the total step,
= 31.2 J x S
P = E / t

Therefore, the person is running at a speed of 2.564 m/s
Answer: constructive interference in which waves strengthen each other
Explanation:
A simple cell can be made by connecting two different metals in contact with an electrolyte. A number of cells can be connected in series to make a battery , which has a higher voltage than a single cell. In non-rechargeable cells, eg alkaline cells, a voltage is produced until one of the reactants is used up