Suppose we replace the electron beam with a proton beam. what proton energy is needed to achieve the same resolution as the electron beam in part a?

Observations show that interstellar clouds can have almost any shape and

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked