A 30 kg child climbs 15 meters up a tree. When he looks around, when is the child’s potential energy ?

Gravitational potential energy of the child = 4410 J.

Explanation:

Given data:

Mass of the child,

Mass of the child,

The gravitational potential energy of the child at 15 m height can be given as,

c.the charges if the proton and electron and gravity

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.