A spring which is extended by an amount x has a tension Kx. A mass M is placed on the spring; gravity causes the spring to extend. The system starts with the spring extended by an amount Mg/2K. After, a long time the mass and spring reach a new equilibrium position. Given that the spring and its surroundings at a temperature T, obtain an expression for the increase in the entropy of the universe.

Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart. half way betwween the two plates the electric field has magnitude e. if the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates?

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

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.