The critical angle for an air-glass interface is 29.6°. When a light ray in air is incident on the interface, the reflected ray is 100% polarized. What is the angle of refraction of that ray?
A) 25.1° B) 24.5° C) 25.7° D) 23.9° E) 26.3°
E
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A steel container, equipped with a piston, contains 21 mol of an ideal gas at 465 K. The container is compressed isothermally to 90% of its original volume. How much work is done on the gas? The ideal gas constant is R = 8.314 J/mol ? K
A) 8600 J B) -73,300 J C) 11 J D) -8500 J
A 170. pound halfback is tackled by a 245. pound guard. Each, of course, exerts a force on the other. Which of the players exerts the LARGER force on the other?
What will be an ideal response?
If a hydrogen atom in the ground state absorbs a photon of energy 12.09 eV, to which energy state will it make a transition?
A) n = 2 B) n = 3 C) n = 4 D) n = 5
A few dozen supermassive black holes have measured masses, and in each case, the mass of the black hole is about _____ the mass of the surrounding central bulge
A) 0.005 percent B) 0.05 percent C) 0.5 percent D) 5 percent