Based on the mathematical equation for energy and amplitude (E=a2), if the amplitude of a wave is 4cm, the wave will have _ of energy. a. 2J
b. 8J
c. 16J

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?