A physicist wants to estimate the rate of emissions of alpha particles from a certain source. He counts 390 emissions in 95 seconds. Estimate the rate, in emissions per second and find the uncertainty in this estimate.

Which of these describe conduction transfer of heat between two objects that are touching transfer of heat by the actual movement of war matter the process in which energy is imitated by one of the object transmitted through space and absorbed by another a process in which energy is released by the molecules breaking apart

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

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