When each metal is hit with light at the minimum wavelength (see question #1) can you vary the intensity of the light to start emitting electrons?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.