Solved: A firehose must be able to shoot water to the top
Chapter 12, Problem 12.7(choose chapter or problem)
In seawater, a life preserver with a volume of \(0.0400 \ \mathrm{m}^3\) will support a 75.0-kg person (average density \(980 \ \mathrm{kg/m}^3\)), with 20% of the person’s volume above the water surface when the life preserver is fully submerged. What is the density of the material composing the life preserver?
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