An object is moving across a surface, but it does not gain or lose speed. Which best describes the object’s force?

A) The net force is positive.
B) The net force is zero.
C) The positive force is greater than the negative force.
D) The negative force is greater than the positive force.

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?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.