Calculate the normal force and force applied of a box that has a mass of 50kg and that is moving rightward with an acceleration of 7.2m/s^2

What is the fate of the electrons that interact with a specimen in an electron microscope?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?