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# Archimedes' Principle

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1. A copper penny has a mass of 2.7 g. What is the buoyant force acting on this penny when dropped into water? (The answer should be 3.0 mN)

2. An iceberg (917 kg/m^3) is floating in the ocean (1,025 kg/m^3). What percentage of the total volume of the iceberg is below the surface of the water? (The answer should be 89.5%)

##### Solution Summary

In this solution we explain how to solve two problems involving Archimedes' principle.

##### Solution Preview

1. The buoyent force acting on the penny is equal to the weight of water displaced by the penny. Since copper has a specific gravity ...

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