What is meant by "the heat death of the universe"?
A) The universe will end in a giant inferno.
B) The universe will reach thermal equilibrium.
C) Some day the sun will explode and we will all burn.
D) Some day the sun will cease to provide electromagnetic radiation.
E) The radiation from the stars will continuously heat up the universe.
B
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Unlike electric potential, the electric potential energy is a vector quantity
Indicate whether the statement is true or false
24.0 moles of a diatomic ideal gas with a molar specific heat 5R/2 is heated from 20.0°C to 100°C. What is the change in entropy of the gas?
A) -0.365 J/K B) 0.365 J/K C) 802 J/K D) -19.9 J/K E) 120 J/K
Standing Sound Waves: One of the harmonics of a column of air in a tube that is open at both ends has a frequency of 448 Hz, and the next higher harmonic has a frequency of 576 Hz. What is the fundamental frequency of the air column in this tube?
A. 32 Hz B. 64 Hz C. 88 Hz D. 128 Hz E. 256 Hz
The processes responsible for virtually all surface geology are
A) convection, conduction, and radiation. B) impact cratering, volcanisms, tectonics, and erosion. C) accretion, differentiation, and radioactive decay. D) eruptions, lava flows, and outgassing.