An ideal polarizer is placed in a beam of unpolarized light and the intensity of the transmitted light is 1. A second ideal polarizer is placed in the beam with its preferred direction rotated 40° to that of the first polarizer
What is the intensity of the beam after it has passed through both polarizers? A)
0.77
B)
0.64
C)
0.59
D)
0.41
E)
0.30
C
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An electromagnetic wave is created by
A. an electrical charge moving at a certain velocity. B. all electric charges. C. a magnetic moving with a certain velocity. D. an accelerating electric charge.
A 150 W light bulb is designed for an ac voltage of 120 V rms. What is the resistance of the bulb?
A. 150 
B. 144
C. 96.0
D. 68.0
E. 48.0
A charge of 2.00 ?C flows onto the plates of a capacitor when it is connected to a 12.0-V potential source. What is the minimum amount of work that must be done in charging this capacitor?
A) 6.00 µJ B) 24.0 µJ C) 12.0 µJ D) 144 µJ E) 576 µJ
Root Wedging
What will be an ideal response?