Two balls, each with a mass of 0.844 kg, exert a gravitational force of 8.45 × 10−11 non each other. how far apart are the balls? the value of the universal gravitational constant is 6.673 × 10−11 n m2/kg2.

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.