Charge: If a charge generator builds a negative static charge of -7.00 ?C, how many electrons are transferred to it during this process. (e = 1.60 × 10-19 C)
A. 4.38 × 1013
B. 7.0
C. 1.12 × 10-18
D. 43.8
Answer: A
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Galaxies seem to be made mostly of dark matter. One type of evidence for this comes from observations of
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Which of the following statements about the strong nuclear force are correct? (There may be more than one correct choice.)
A) It acts equally on protons and neutrons but not on electrons. B) It acts equally on protons, neutrons, and electrons. C) It has a much longer range than the electric force. D) It keeps electrons in their orbits around the nucleus. E) Because of its very short range, there is a limit to how large the nucleus can be.
Which of these is considered true about the mass of the neutrino?
a. It is the same as the mass of an electron or positron. b. It is the same as the mass of a nucleon. c. It is the same as the mass of an alpha particle. d. It is zero. e. It is slightly more than zero, but less than an electron.
A superconductor expels any magnetic field from its interior. This is called
a. electromagnetic induction. b. Maxwell's effect. c. magnetic declination. d. the Meissner effect. e. none of the above.