Single-Slit Diffraction: Radio waves are diffracted by large objects such as buildings, whereas light is not noticeably diffracted. Why is this?
A. Radio waves are unpolarized, whereas light is normally polarized.
B. The wavelength of light is much smaller than the wavelength of radio waves.
C. The wavelength of light is much greater than the wavelength of radio waves.
D. Radio waves are coherent and light is usually not coherent.
E. Radio waves are polarized, whereas light is usually unpolarized.
Answer: B
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Molar Specific Heats: If we add 700 J of heat to 12 moles of an ideal monatomic gas at constant volume, what will be the change in temperature of the gas? (R = 8.31 J/mol ? K)
A. 4.7 K B. 5.2 K C. 5.8 J D. 6.8 K E. 9.3 K
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a. always increases. b. always remains constant. c. increases when work is done by the system. d. increases when work is done on the system.
Louis de Broglie
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