Answer the following statement(s) true (T) or false (F)
1. The heat capacity of any energy storage mode with quantized energy levels goes to zero as the temperature T goes to zero.
2. The average x-velocity of molecules in a container of gas at rest is zero.
3. The average molecular speed is zero
1. TRUE
2. TRUE
3. FALSE
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How did Edwin Hubble measure the distance to the Andromeda Galaxy?
A) He measured its parallax. B) He used Cepheid variables in the Andromeda Galaxy. C) He deduced it from its redshift. D) He used white dwarf supernovae in the Andromeda Galaxy.
What are fossil fuels?
A) any fuel that releases CO2 into the atmosphere upon burning B) any fuel that is extracted from the interior of Earth C) mineral-rich deposits from ancient seabeds D) the carbon-rich remains of plants that died millions of years ago E) carbonate-rich deposits from ancient seabeds
Normal atmospheric pressure is
a. 14.7 psi. b. 1 N/m2. c. zero. d. 760 mm of mercury. e. 101,000 pascals. f. none of the above.
Monochromatic light (? = 500 nm) is incident on a soap bubble (n = 1.4) that is 500-nm thick. Calculate the change of phase of the light that penetrates the front surface, reflects from the second surface, and emerges through the first surface as an angle between 0° and 360°?
a. 280° b. 160° c. 220° d. 100° e. 290°