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?
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.
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