The metal on the left has been magnetized, and the metal on the right has
not. Draw the arrows in the domains of both

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

Positrons are spontaneously emitted from the nuclei of

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n