Which planets are considered terrestrial in nature?
a. Jupiter, Saturn, Earth, and Mars
b. Uranus, Neptune, Earth, and Mars
c. Jupiter, Saturn, Uranus, and Neptune
d. Mercury, Venus, Earth, and Mars
Answer: d. Mercury, Venus, Earth, and Mars
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A particle (charge = 40 ?C) moves directly toward a second particle (charge = 80 ?C) which is held in a fixed position. At an instant when the distance between the two particles is 2.0 m, the kinetic energy of the moving particle is 16 J. Determine the distance separating the two particles when the moving particle is momentarily stopped
a. 0.75 m b. 0.84 m c. 0.95 m d. 0.68 m e. 0.56 m
A device that transforms mechanical energy into electrical energy is a
A) generator. B) motor. C) transformer. D) magnet. E) none of the above
The recombination era of the big bang was very important in several ways. Explain what happened during this time and what observable effects of the era existed
What will be an ideal response?
A beam of electrons is sent in the positive x-direction in a region with a uniform magnetic field B in the positive y-direction and a uniform electric field E in the positive z-direction. At which of the following speeds would the electrons be deflected in the positive z-direction?
a. v < E/B b. v = E/B c. v > E/B d. There is no speed for which this will happen.