How is the energy of a photon related to its frequency?
Ans: The energy of a photon is directly proportional to its frequency.
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Energy in Capacitors: When a 12.0-V battery causes 2.00 ?C of charge to flow onto the plates of an air-filled capacitor, how much work did the battery do?
A. 24.0 ?J B. 12.0 ?J C. 144 ?J D. 576 J
A large water storage container is filled to a depth of 3.0 m. The volume above the water is filled with air. In order to pump the water from the container, the air pressure in the container is increased by 3.0 
105 N/m2. What happens to the pressure in the water at a depth of 1.0 m when the air pressure is increased?
A.
B.
105 N/m2, since it is at 1/3 the depth of the water.C.
105 N/m2, since it is at 2/3 the depth from the bottom of the container.D.
105 N/m2.E.
105 N/m2 + 9.8 
103 N/m2 since it is 1.0 m deep in the water.A lightbulb is plugged into a household outlet, and one of the wires leading to it is wound into a coil. Now a slug of iron is slid into the coil. What effect will this have?
A) The lamp will dim because energy will now be dissipated in the iron. B) The lamp will get brighter because there will be an induced emf that will drive more current through the lamp. C) The lamp will dim because a back emf will be produced by the coil, and this will reduce the current flowing in the coil and the lamp. D) This will have no effect on the brightness of the lamp. E) This will not affect the lamp's brightness because the coil will shift the phase, but not the magnitude, of the current through the lamp.
How much heat is required to raise the temperature of 2 moles of an ideal monatomic gas by 10 C° at constant volume?
A) 249 J B) 416 J C) 208 J D) 200 J E) 125 J