College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 11, Problem 14P
A 1.5-kg copper block is given an initial speed of 3.0 m/s on a rough horizontal surface. Because of friction, the block finally comes to rest. (a) If the block absorbs 85% of its initial kinetic energy as internal energy, calculate its increase in temperature. (b) What happens to the remaining energy?
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A 1.5-kg copper block is given an initial speed of 3.0 m/s on a rough horizontal surface. Because of friction, the block finally comes to rest. (a) If the block absorbs 85% of its initial kinetic energy as internal energy, calculate its increase in temperature. (b) What happens to the remaining energy?
A 1.4-kg copper block is given an initial speed of 2.0 m/s on a rough horizontal surface. Because of friction, the block finally comes to rest. If the block absorbs 85% of its initial kinetic energy as internal energy, calculate its increase in temperature.
A person inhales and exhales 2.00 L of 37.0ºC air, evaporating 4.00×10−2 g of water from the lungs and breathing passages with each breath. (a) How much heat transfer occurs due to evaporation in each breath?(b) What is the rate of heat transfer in watts if the person is breathing at a moderate rate of 18.0 breaths per minute?(c) If the inhaled air had a temperature of 20.0ºC , what is the rate of heat transfer for warming the air?(d) Discuss the total rate of heat transfer as it relates to typical metabolic rates. Will this breathing be a major form of heat transfer for this person?
Chapter 11 Solutions
College Physics
Ch. 11.2 - Prob. 11.1QQCh. 11.4 - Prob. 11.2QQCh. 11.5 - Will an ice cube wrapped in a wool blanket remain...Ch. 11.5 - Two rods of the same length and diameter are made...Ch. 11.5 - Stars A and B have the same temperature, but star...Ch. 11 - Rub the palm of your hand on a metal surface for...Ch. 11 - On a clear, cold night, why does frost tend to...Ch. 11 - Substance A has twice the specific heat of...Ch. 11 - Equal masses of substance A at 10.0C and substance...Ch. 11 - Prob. 5CQ
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