Write the nuclear equation for the alpha decay of astatine-213.

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.

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging