n an amusement park ride, a person with mass 52 kg stands against the wall of a cylindrical room with radius 14.3 and coefficient of friction 0.594 between the rider and the wall. The ride begins to rotate. When the ride attains a constant speed of 7.4 m/s, the floor drops down ward. The rider remains pinned against the wall. What is the magnitude of the force that the rider feels pinning him against the wall

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.