Physics for Scientists and Engineers, Vol. 1
6th Edition
ISBN: 9781429201322
Author: Paul A. Tipler, Gene Mosca
Publisher: Macmillan Higher Education
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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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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
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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
Suppose that the average U.S. household uses 14600 kWh14600 kWh (kilowatt‑hours) of energy in a year. If the average rate of energy consumed by the house was instead diverted to lift a 1470 kg1470 kg car 11.3 m11.3 m into the air, how long would it take?
Using the same rate of energy consumption, how long would it take to lift a loaded Boeing 747 airplane, with a mass of 4.10×105 kg4.10×105 kg , to a cruising altitude of 8.92 km8.92 km ?
The human body, while at rest, produces heat energy at a rate of about 103 W. How much sweat (in g) must evaporate every minute from their skin to carry away this excess energy? (Note: according to your book, the latent heat of vaporization of water at body temperature is 2.43 * 106 J/kg).
Chapter 7 Solutions
Physics for Scientists and Engineers, Vol. 1
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