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What is the average speed of a plane that flies 7,200 km in 9 hours?
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An object has a weight of 500 on earth what is the mass of this object
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Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value
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The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
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What is the average speed of a plane that flies 7,200 km in 9 hours?...
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