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Physics, 23.07.2019 08:50 hernandezramirp2pjmh
1. astronomers measure the angle that the star appears to jump when viewing it from two different points in earth's orbit. what is this technique called? a) parsecs b) parallax c) luminosity d) mass transfer 3. what properties of a star are needed to calculate the stars's luminosity? a) size and apparent brightness b) mass and distance to the star c) temperature and diameter of the star d) apparent brightness and distance to the star 4. which cool and bright stars are located in the upper right of the h-r diagram? a) red giant b) neutron stars c) white dwarfs d) main sequence 5. what color are stars that are very hot and very bright? a) red b) blue c) white d) yellow
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