Acar travels 120 miles in two hours. what is its speed? a. 55 miles per hourb. 60 miles per hour c. 120 miles per hourd. 70 miles per hour

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.

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical

What type of force holds atoms together in a crystal?