When a firecracker explodes, what types of energy does it give off?
a. sound and light energy only
b. potential and kinetic energy
c. sound, light, and heat energy
d. sound, light, and chemical energy

How many neutrons does element x have if it’s stormy umber is 33 and it’s mass number is 95?

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.