Physics, 09.09.2020 20:01 fionademoss6810
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. Which is cooler? Which has a greater absolute magnitude? Which emits more energy per unit surface area? Which is closer to the observer?
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What are two different ways you could find the value of a? explain these methods.
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Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)
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Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?
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Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match
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Two main sequence stars appear equally bright in the night sky. Star P has a spectral class of M2 an...
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