The celsius tempersture scale is based on which of the following? a) vapor b) the human body c) the boiling point of air d) the boiling and freezing points of water

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.