14500 kg tractor trailer travels up and down a 75-meter hill on its way to pick up a load of lumber weighing 26000 kg. it then turns around and makes the trip back along the same route. Upon descending the hill in either direction the brakes absorb 20% of the truck’s energy. What would the increase in temperature of the brakes be in each direction? (brake mass = 215kg, brake specific heat = 1100 J/kgC)
14500 kg tractor trailer travels up and down a 75-meter hill on its way to pick up a load of lumber weighing 26000 kg. it then turns around and makes the trip back along the same route. Upon descending the hill in either direction the brakes absorb 20% of the truck’s energy. What would the increase in temperature of the brakes be in each direction? (brake mass = 215kg, brake specific heat = 1100 J/kgC)
Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter20: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 20.78AP
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A 14500 kg tractor trailer travels up and down a 75-meter hill on its way to pick up a load of
lumber weighing 26000 kg. it then turns around and makes the trip back along the same route.
Upon descending the hill in either direction the brakes absorb 20% of the truck’s energy. What
would the increase in temperature of the brakes be in each direction? (brake mass = 215kg,
brake specific heat = 1100 J/kgC)
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