When two gases separated by a diathermal wall are in thermal equilibrium with each other:
A. it rises to the ceiling
B. it sinks to the floor
C. it stops expanding
D. it starts to contract
E. none of the above
Answer: C. it stops expanding
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Irregularities in Earth's surface influence wind patterns. At night, winds blow from a region
A) over the ocean toward land. B) above land toward the ocean. C) of high pressure to a region of lower pressure. D) of high pressure (ex: land) to a region of lower pressure (ex: ocean).
Polarized light is to have its polarization plane rotated by 90°. In which of the following cases does the final beam have the greatest intensity?
a. 3 polarizing filters, each rotate beam by 30°. b. 2 polarizing filters, both rotate beam by 45°. c. 1 polarizing filter, rotating beam by 90°. d. None of the above, polarized light can't be rotated.
Light enters water (n = 1.33) from air. The incident light ray makes a 0.44° angle with the normal to the surface on the air side. What will be the angle made with the normal by the refracted ray on the water side?
A. Nearly 90° B. 1.58° C. 0.188° D. 0.33°
A box is sliding down an incline tilted at a 12.0° angle above horizontal. The box is initially sliding down the incline at a speed of 1.50 m/s. The coefficient of kinetic friction between the box and the incline is 0.340
How far does the box slide down the incline before coming to rest? A) 0.920 m B) 2.33 m C) 1.78 m D) 0.720 m E) The box does not stop. It accelerates down the plane.