A mass on a horizontal surface is connected to the spring and pulled to the right along the surface stretching the spring by 25 cm. if the pulling force exerted on the mass was 80.N, determine the spring constant of the spring.

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.