If it is known that a non-zero net force is acting on an object, then which of the following must be assumed regarding the object's motion?

A. The object is at rest.
B. The object is moving with a constant velocity.
C. The object is accelerating.
D. The object is at equilibrium.

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?