In common transparent media, as the frequency of light increases, the index of refraction
A) increases.
B) stays constant.
C) decreases.
D) varies as the sine of the incident angle.
A
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The type of energy that a swinging pendulum has at the low point of its swing is
A) elastic. B) kinetic. C) gravitational. D) thermal. E) sexual.
In a resonating pipe which is open at one end and closed at the other, there
A) are displacement nodes at each end. B) are displacement antinodes at each end. C) is a displacement node at the open end and a displacement antinode at the closed end. D) is a displacement node at the closed end and a displacement antinode at the open end.
The gravitational force between two objects can be described using the equation Fg = G M1 M2 / d2. In this equation, what does d represent?
A) the universal gravitational constant B) the density of the smaller object C) the distance between the two objects D) the diameter of the larger object
A box weighing 77.0 N rests on a table. A rope tied to the box runs vertically upward over a pulley and a weight is hung from the other end. Determine the force that the table exerts on the box if the weight hanging on the other side of the pulley weighs 30.0 N.
