The unit of capacitance, the farad, is dimensionally equivalent to which of the following?
a. J/V
c. V×C
b. C/V
d. V/C
B
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An electron microscope makes use of
A) short wavelengths of light. B) the wave nature of electrons. C) electron attraction and repulsion. D) electron current. E) the inertia of electrons.
Light of wavelength 425.0 nm in air falls at normal incidence on an oil film that is 850.0 nm thick. The oil is floating on a water layer 15 cm thick. The refractive index of water is 1.33, and that of the oil is 1.40
You want to add oil so that light reflected off of the top of the oil film will be canceled. What is the minimum distance that you should INCREASE the oil film? A) 60.7 nm B) 75.9 nm C) 106 nm D) 121 nm E) 152 nm
The distance from the center of a Ferris wheel to a passenger seat is 12 m. What centripetal acceleration does a passenger experience when the wheel's angular speed is 0.50 rad/s?
a. 17 m/s2 b. 9.0 m/s2 c. 3.0 m/s2 d. 6.0 m/s2
If it is 10:00 A.M. EST in Washington, D.C., what is the time in Denver, Colorado, the longitude of which is 30° more westerly?
a. 12 noon MST b. 8:00 A.M. MST c. 10:00 A.M. MST d. 9:00 A.M. MST