A 104-? resistor is connected in series with a 14.7-µF capacitor and a 56-Hz, 136-V (rms) line voltage. If electrical energy costs 4.8¢ per kWh, about how much does it cost to leave this circuit connected for 24 hours?
a. 2¢
b. 46¢
c. 200¢
d. 5¢
d
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In each of the cases (a) and (b) shown below the electric and magnetic fields in an electromagnetic wave point in the directions shown as the wave passes a certain point P. [ 
points away from the viewer in case (b).] 
In which direction is the wave moving?
A. A B. B C. C D. D E. Toward the viewer F. Away from the viewer T. This is impossible.
The diagram represents energy levels in a hydrogen atom. The labeled transitions (A through E) represent an electron moving between energy levels
Suppose that an electron in a hydrogen atom absorbs 10.2 eV of energy, so that it moves from level 1 to level 2. What typically happens next? A) The electron remains in level 2 until it absorbs an additional 10.2 eV of energy. B) The electron jumps to level 3 as soon as it absorbs any additional energy. C) A different electron drops into level 1, since it is now unoccupied. D) The electron returns to level 1 by emitting an ultraviolet photon with 10.2 eV of energy.
An object is thrown vertically and has an upward velocity of 18 m/s when it reaches one fourth of its maximum height above its launch point. What is the initial (launch) speed of the object?
a. 35 m/s b. 25 m/s c. 30 m/s d. 21 m/s e. 17 m/s
An “up” quark has a charge of -2/3 times the electron’s charge. A “strange” quark has a charge of +1/3 times the electron’s charge. What is the net charge of the quark triplet consisting of two up quarks and a strange quark? (This quark triplet is one of a family of three “? particles.”)
A. +(5/3)e B. +e C. +(1/3)e D. zero E. -(1/3)e F. -e T. -(5/3)e