Show that for two parallel plate capacitors of area A, separated by a distance d apart with a di-electric material of thickness t, in between them. The capacitance is given by this expression C=ĘA[1/(d-1) + Ęr/t]​

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

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