Which is larger, a newton or a pound?
a. a newton
b. a pound
c. This question is nonsense—they don't measure the same physical quantity.
d. They are the same size.
b
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In order that nuclear reactions will begin in the core of a protostar it must become
A. hot and of very low density B. hot and dense C. cold and dense D. cold and of very low density E. infinitely collapsed
If an electron is accelerated from rest through a potential difference of 9.9 kV, what is its resulting speed? (e = 1.60 × 10-19 C, k = 1/4??0 = 8.99 × 109 N ? m2/C2, mel = 9.11 × 10-31 kg)
A) 5.9 × 107 m/s B) 4.9 × 107 m/s C) 3.9 × 107 m/s D) 2.9 × 107 m/s
A rocky leftover planetesimal orbiting the Sun is
A) a comet. B) a meteor. C) an asteroid. D) a meteorite. E) possibly any of the above
If you went to the moon, you would find that
A) your mass would be reduced, but not your weight. B) it really is made of blue cheese. C) your weight would be increased. D) both your weight and your mass would be reduced. E) your weight would be reduced, but not your mass.