What claim can you make about the relationship between kinetic energy and potential energy?

Are aliens real? justify you’re answer.

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a.a piece of paper b.a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block