Potential energy that depends on height is called
a. kinetic energy.
b. gravitational potential energy.
c. elastic potential energy.
d. mechanical energy.

if you answer my question i will answer yours

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.