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    Density and Rock

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    A geologist finds that a moon rock whose mass is 8.80 kg has an apparent mass of 6.7 kg when submerged in water. What is the density of the rock?

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    Solution Preview

    Archimedes Principle (slightly paraphrased):

    "When an object is immersed in a fluid it is buoyed up by a force equal to the weight of the fluid displaced by the object."

    A fluid or gas is constantly exerting pressure on any object that is submerged inside of that fluid / gas. This "pressure" tries to force the object upwards due to the displaced volume of fluid that occurs from the ...

    Solution Summary

    This solution uses the Archimedes Principle to determine the density of the moon rock using the absolute and apparent mass when submerged in water.