How does a 1.2-solar-mass white dwarf compare to a 1.0-solar-mass white dwarf?
A) It has a larger radius.
B) It has a smaller radius.
C) It has a higher surface temperature.
D) It has a lower surface temperature.
E) It is supported by neutron, rather than electron, degeneracy pressure.
B
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Find the frequency of X-rays of wavelength 1 Å = 10?10 m.
A. 3 × 1018 Hz B. 3 × 1010 MHz C. 6 × 109 Hz D. 3 × 108 Hz E. 3 × 1020 Hz
The average force required to accelerate a 0.20-kg ball from rest to 30 m/s in 0.002 s is
A. 15,000 N. B. 3,000 N. C. 0.003 N D. 75,000 N.
Brick A is dropped from the top of a building. Brick B is thrown straight down from the same building. Neglect air. Which statement about their accelerations is correct?
A) The acceleration of A is greater than the acceleration of B. B) The acceleration of B is greater than the acceleration of A. C) The two bricks have exactly the same acceleration. D) Neither brick has any acceleration once it is released.
The Fort Lonesome and Terre Haute gasification plants were subsidized with public money. According to one observer quoted in Ref. 219, the company would have built the plant in any case
Was this a good or poor use of public money? Try to argue both sides.