- Heat & Thermodynamics
Volume; Density; Mass; Temperature - Frictional Heat
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1. What volume of foam (lifevest) with a given density will be needed to keep a person, with a given mass and density, 1/3 out of the water?
2. A 20g lead bullet moving at 400m/s strikes a tree. How much will the temperature be raised if 1/2 of the frictional heat goes into the bullet?
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1. Volume of water dispalced is same for two objects.
Volume of person = V1
Density of person = d1
2/3 of his volume is ...
The expert examines frictional heat for volume, density, mass and temperature.