Apail of water is rotated in a vertical circle of radius r = 1.6 m . the acceleration of gravity is 9.8 m/s 2 . r v what is the minimum speed of the pail at the top of the circle if no water is to spill out? answer in units of m/s.

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.