What do we call a small piece of solar system debris found on Earth?
A) solar system debris
B) cometary fragment
C) meteor
D) meteorite
E) meteoroid
D
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What is the Great Red Spot?
A. a region of gas on Jupiter's surface that contains a great deal of iron B. a huge spinning vortex larger than Earth in Jupiter's atmosphere C. another name for Jupiter D. a place on Jupiter's surface where comet Shoemaker-Levy landed in 1992
Two point charges of magnitudes + 8.00 ?C, and + 10.0 ?C are placed along the x-axis at x = 0 cm and x = 100 cm, respectively
Where must a third charge be placed along the x-axis so that it does not experience any net force because of the other two charges? A) 4.72 cm B) 47.2 cm C) 50 cm D) 9.12 cm E) 91.2 cm
For every stable nucleus except hydrogen, if the number of nucleons is doubled, the quantity that will change least is the
a. mass. b. charge. c. volume. d. density.
Imagine for a minute that the Moon is held in its orbit about the Earth by electrical forces rather than by gravitation. What electrical charges -Q on the Earth and +Q on the Moon are necessary to hold the Moon in a circular orbit with a period of 27.3 days? The Earth-Moon distance is 384 000 km and the mass of the Moon is 7.35 × 10^22 kg