An ideal polarizer is placed in a beam of unpolarized light and the intensity of the transmitted light is 1.000. A second ideal polarizer is placed in the beam with its referred direction rotated 40° to that of the first polarizer
What is the intensity of the beam after it has passed through both polarizers? A) 0.7661
B) 0.4131
C) 0.5868
D) 0.6431
E) 0.5000
C
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On the equator, days and nights are always 12 hours long, no matter what time of year
Indicate whether the statement is true or false
One way to heat a gas is to compress it. A gas at 3.0 atm at 27°C is compressed to three tenths of its original volume, and it reaches 35 atm pressure. What is its new temperature?
a. 186 K b. 95°C c. 1 050°C d. 777°C e. 389 K
Which of the following statements are true about an object in two-dimensional projectile motion if we neglect air? (There could be more than one correct choice.)
A) The speed of the object is constant but its velocity is not constant. B) The acceleration of the object is +g when the object is rising and -g when it is falling. C) The acceleration of the object is zero at its highest point. D) The speed of the object is zero at its highest point. E) The horizontal acceleration is always zero and the vertical acceleration is always a non-zero constant downward.
A photon absorbed by an electron will give up more energy to the electron if the photon:
a. is not spread out over many electrons. b. is moving faster. c. is moving slower. d. has a higher frequency.