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OpenStudy (anonymous):

the earth travels around the sun once a year in an approximately circular orbit whose radius is 1.50x10^11. from these data determine the speed of the earth and the mass of the sun

OpenStudy (anonymous):

use keplers third law for the mass of the sun ...... for the speed of earth you have two methods:1- use newton's law 2-simple circular motion techniques (speed= 2pi R squared divided by time which is one year)

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