The Earth moves at a uniform speed around the Sun in an approximately circular orbit of radius r = 1.50×1011 m.

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.

What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology

Does heating a metal wire increase or decrease its electrical resistance? why?