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37.37. A bullet penetrates a wooden block and loses its velocity by half after it leaves the block. What is the ratio between the initial kinetic energy of the bullet and kinetic energy when the bullet leaves the block? O

37.37. A bullet penetrates a wooden block and loses its velocity by half after it leaves the block. What is the ratio between the initial kinetic energy of the bullet and kinetic energy when the bullet leaves the block? O

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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37.37. A bullet penetrates a wooden block and loses its velocity by half after it leaves the block. What is the ratio between the initial kinetic energy of the bullet and kinetic energy when the bullet leaves the block? O
Transcribed Image Text:37.37. A bullet penetrates a wooden block and loses its velocity by half after it leaves the block. What is the ratio between the initial kinetic energy of the bullet and kinetic energy when the bullet leaves the block? O
38. 38. A block with a mass of m crosses a rough horizontal surface at a constant speed of v. The coefficient of kinetic friction between the block and the surface is µk. How much power must be produced in order to overcome the friction force?
Transcribed Image Text:38. 38. A block with a mass of m crosses a rough horizontal surface at a constant speed of v. The coefficient of kinetic friction between the block and the surface is µk. How much power must be produced in order to overcome the friction force?
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