Question 3
How does kinetic energy naturally flow: from hot to cold or cold to hot?

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.

Group of elements with the same number of valence electrons

What is the difference between a solar cell and a solar panel