- #1
PhysicsMajor86
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I cannot figure out the answers for the following problems:
1) If a star has a parrallax of 0.016 second of arc and an apparent magnitude of 6, how far away is it, and what is its absolute magnitude?
7) If a star is 10 times the radius of the sun and half as hot, what will its luminosity be?
13) If the orbital velocity of the eclipsing binary in Figure 8-17 is 153 km/s and the smaller star becomes completely eclipsed in 2.5 hours, what is its diameter?
1) If a star has a parrallax of 0.016 second of arc and an apparent magnitude of 6, how far away is it, and what is its absolute magnitude?
7) If a star is 10 times the radius of the sun and half as hot, what will its luminosity be?
13) If the orbital velocity of the eclipsing binary in Figure 8-17 is 153 km/s and the smaller star becomes completely eclipsed in 2.5 hours, what is its diameter?