What are the two general types of energy that can be used to classify many forms of energy?

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Which best represents the law of conservation of mass ?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.