A Martian meteorite has revealed carbonate rocks and microfossils
Indicate whether the statement is true or false
FALSE
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A 10 kg meteor moves through outer space, far from all gravitational influences. How much work is done on the meteor during a 5 m segment of its path?
A) none B) 50 J C) 2 J D) 20 J E) 500 J
A binary star is a pair of stars that orbit around each other. By detecting this orbital motion, and using Kepler's laws and the law of gravitation, one can directly measure the stars' ________.
A. temperatures B. masses C. luminosities D. distances
An object moves with constant speed through a fluid. For a fixed geometry and fluid density, if the viscosity of the fluid increases then the speed at which flow becomes turbulent
A) increases. B) remains the same. C) decreases. D) could increase or decrease depending on the shape of the object. E) could increase or decrease depending on the value of the fluid density.
What kind of "spark" is the molecular cloud awaiting?
A: B, C, or D are possible B: cooling until the cloud cannot support itself C: a wind from a nearby massive star D: a pressure wave from a nearby supernova E: none of the above