The rms speed of a certain sample of carbon dioxide molecules, with a molecular weight of 44 g/mole, is 396 m/s. What is the rms speed of water molecules, with a molecular weight of 18 g/mol, at the same temperature?
A)
253 m/s
B)
387 m/s
C)
421 m/s
D)
506 m/s
E)
619 m/s
E
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Phase Angles: A series circuit containing an inductor and a resistor is driven by a 120-V 60-Hz voltage source. The resistance is equal to 20.0 ? and the inductance is 160 mH. What is the phase angle between the current the the applied voltage?
What will be an ideal response?
Compton Scattering: If the scattering angle of the light in Compton's scattering experiment is 90°, what is the change in the wavelength of the light? (melectron = 9.11 × 10-31 kg, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
A. 1.22 × 10-12 m B. 2.42 × 10-12 m C. 3.65 × 10-12 m D. 4.85 × 10-12 m
The flattest of the elliptical galaxies are class
A) E0. B) SBO. C) E7. D) E9. E) SBF.
One phenomenon that demonstrates the particle nature of light is:
a. the photoelectric effect. b. diffraction effects. c. interference effects. d. the prediction by Maxwell's electromagnetic theory.