Of matter states that all particles of matter are in constant motion.

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?