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6. Which is hotter, a main sequence star with an absolute magnitude of M= 8 or a white dwarf with a luminosity 100 times smaller than the Sun?
6. Which is hotter, a main sequence star with an absolute magnitude of M= 8 or a white dwarf with a luminosity 100 times smaller than the Sun? A) the main sequence star b) the white dwarf c) They have the same temperature. D) There is insufficient information to determine this. 7. Which statement is the most correct about the comparison between a spectral type G5 main sequence star and a spectral type O5 main sequence star? A) The G5 star is cooler, dimmer, smaller, and will not live as long as the O5 main sequence star. B) The G5 star is hotter, brighter, smaller, and will live longer than the O5 main sequence star. C) The G5 star is smaller, hotter, brighter, and will not live as long as the O5 main sequence star. D) The G5 star is dimmer, cooler, smaller, and will live longer than the O5 main sequence star. E) The G5 star is hotter, dimmer, larger, and will live longer than the O5 main sequence star.
