Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 7, Problem 17P
To determine
The total energy used by all cars in United States in a year.
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A food calorie is a unit of energy such that 1 food calorie = 4184 J. This means that a person that burns energy with a power of 4184 W would burn one food calorie every second. A more typical human power rate is 90 W (called the basal metabolic rate). At this rate, how many calories are burned per second (or alternatively, how many seconds does it take to burn 1 calorie)?
When it rains, water vapor in the air condenses into liquid water, and energy is released. (a) How much energy is released when 0.0356
m (1.40 inch) of rain falls over an area of 2.59×106 m² (one square mile)? (b) If the average energy needed to heat one home for a year is
1.50x10¹1 J, how many homes could be heated for a year with the energy determined in part (a)?
(a) Number i
(b) Number 1
Units
Units
Consider the thermodynamic process, A->B->C->A shown above. The heat absorbed during A->B is 591J. If the change in internal energy during B->C is 4146J, What is the change in internal energy in SI units during C->A? Express only the number of your answer with 4 significant figures.
Chapter 7 Solutions
Physics for Scientists and Engineers
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