Differences in absolute magnitude correspond to ratios of ________.
A. distance
B. luminosity
C. mass
D. temperature
E. brightness
Answer: B
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Fusing two carbon nuclei would occur with
A) absorption of energy. B) release of energy. C) neither of these
What is the mean free path of molecules in an ideal gas in which the mean collision time is 3.00 × 10-10 s, the temperature is 300 K, and the mass of the molecules is 6.00 × 10-25 kg?
A) 7.22 × 10-8 m B) 4.32 × 10-8 m C) 9.19 × 10-8 m D) 1.39 × 10-8 m E) 6.71 × 10-8 m
How much energy is stored in a room 3.0 m by 4.0 m by 2.4 m due to the earth's magnetic field with a strength of 5.0 × 10-5 T? (?0 = 4? × 10-7 T ? m/A)
A) 575 mJ. B) 570 mJ. C) 29 mJ. D) 100 mJ. E) 10 mJ.
As a body cools, its spectrum will shift to ________ wavelengths.
A. longer B. absorption C. emission D. continuous E. shorter