Which are the two planets without a moon?

a. Mercury and Venus
b. Venus and Mars
c. Mars and Uranus
d. Uranus and Neptune


Ans: a. Mercury and Venus

Physics & Space Science

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Which three played a role in the finding of Neptune?

A) Herschel, Hubble, and Einstein B) Adams, Leverrier, and Galle C) Shapley, Hubble, and Whipple D) Bode, Herschel, and Fraunhofer E) Newton, Einstein, and Tombaugh

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The symbol for copper is

a. C. b. Co. c. Cr. d. Cu.

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Consider the circuit below. Switch S is closed at t = 0

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With each pass of a comet about the Sun, its masss

A) is appreciably reduced. B) remains virtually unchanged. C) actually increases.

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