A parallel plate capacitor has a paper dielectric having dielectric strength 8.00 kV/mm and dielectric constant 3.00. The plate area is 3000 
and the plate separation is 0.500 mm. If 10.0 V are applied to this capacitor, what is the charge on the capacitor?
A. 50.0 
C
B. 42.0 nC
C. 160 nC
D. 16.0 nC
E. 42.0 C
C. 160 nC
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The resolution of Olbers's paradox suggests that it gets dark at night because
a. the Universe is not infinite in age. b. the Universe is static. c. the Universe is closed. d. the Universe is not infinite in age and the Universe is static. e. All of the other choices are correct.
A block of mass 4.0 kg rests on a horizontal surface where the coefficient of kinetic friction between the two is 0.20 . A string attached to the block is pulled horizontally, resulting in a 3.0-m/s2 acceleration by the block. Find the tension in the string. (g = 9.80 m/s2)
a. 12 N b. 7.8 N c. 20 N d. 4.2 N
What are coronae on the surface of Venus?
a. ice trapped at the poles b. subduction zones creating jagged mountains c. peaks of the highlands d. features left by rising convection currents e. the basin of an impact crater
The presence of a Mercurian magnetic field surprised the planetary scientists on the Mariner 10 team because
A) Mercury is low in iron. B) Mercury spins too rapidly to produce a stable dynamo. C) it's still too hot for its core to have differentiated. D) the dynamo theory predicted that Mercury was spinning too slowly for one. E) Mercury lacks an iron core.