A 50.0 kg box is pushed along the floor with a force of 85 N. It is moved 8.0 m. How much work was done in moving the box? Formula:
W = Fd
W(lifting) = mgh g = 9.8 m/s^2
P = W/t

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.

By what primary heat transfer mechanism does the sun warm the earth?

Discuss the difference between thermal energy and heat. (terrance) terrance, egolf, r., congdon, donald. physical science student text, 5th edition. bju press, 2014. vitalbook file.