Two white dwarf stars are the same size, but one has a surface temperature twice as hot as the other. The hotter star will radiate
a. half as much energy per second as the cooler star.
b. the same amount of energy per second as the cooler star.
c. four times as much energy per second as the cooler star.
d. sixteen times as much energy per second as the cooler star.
d
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A horizontal uniform meter stick supported at the 50-cm mark has a mass of 0.50 kg hanging from it at the 20-cm mark and a 0.30 kg mass hanging from it at the 60-cm mark. Determine the position on the meter stick at which one would hang a third mass of 0.60 kg to keep the meter stick balanced
a. 74 cm b. 70 cm c. 65 cm d. 86 cm e. 62 cm
The planet Neptune is:
A) easily visible with the naked eye. B) barely visible with the naked eye. C) visible with at least small telescopes or binoculars. D) only visible with a large, high-quality telescope. E) only visible with a space-based telescope.
The lunar regolith is constantly eroded by ________
Fill in the blank(s) with correct word
Contrast meteoroids and asteroids
What will be an ideal response?