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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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
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