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Two main sequence stars appear equally bright in the night sky. Star P has a spectral...

Two main sequence stars appear equally bright in the night sky. Star P has a spectral class of M2 and Star Q has a spectral class of B8. Explain your answers.

  1. Which is cooler?
  2. Which has a greater absolute magnitude?
  3. Which emits more energy per unit surface area?
  4. Which is closer to the observer?
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