COSMIC PERSPECTIVE LL FD
9th Edition
ISBN: 9780135877074
Author: Bennett
Publisher: PEARSON
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Chapter 14, Problem 58EAP
Solar Power for the United States. Total annual U.S. energy consumption is about
a. What is the average power requirement for the United States, in watts? (Hint:
b. The best available solar cells can generate an average (day and night) power of about
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Suppose you require 2500 food Calories per day.
a. What is your average power, in watts?
b. How much energy, in joules, do you require from food in a year? Counting all forms of energy (such as gasoline, electricity, and energy for heating), the average person consumes about 350
billion joules of energy each year. Compare this value to the energy needed from food alone.
a. What is your average power, in watts?
Approximately 121 watts
(Round to the nearest whole number as needed.)
b. The energy required from food is approximately billion joules per year.
(Round to the nearest tenth as needed.)
It is not unusual for a 1000-kg car to get 30 mi/gal when traveling at 60 mi/h on a level road.
A. If this car makes a 200-km trip, how many joules of energy does it consume?Note that 1.0 gal of gasoline yields 1.3 ×109 J (although this can vary)?
B. What is the average rate of energy consumption during the trip?
The solar power per unit area at the Earth's
distance from the sun--called the "solar
constant"--is 1.36 kW/m^2. If a solar power
station in a sunny location uses 20%-efficient
solar panels, what area of panels is required
to replace a 1.0 GW power plant at noon.
Express the answer in square kilometers.
3676
Chapter 14 Solutions
COSMIC PERSPECTIVE LL FD
Ch. 14 - Prob. 1VSCCh. 14 - Prob. 2VSCCh. 14 - Prob. 3VSCCh. 14 - Prob. 1EAPCh. 14 - Prob. 2EAPCh. 14 - Prob. 3EAPCh. 14 - Prob. 4EAPCh. 14 - Prob. 5EAPCh. 14 - Prob. 6EAPCh. 14 - Prob. 7EAP
Ch. 14 - Prob. 8EAPCh. 14 - Prob. 9EAPCh. 14 - Prob. 10EAPCh. 14 - Prob. 11EAPCh. 14 - What are neutrinos? What was the solar neutrino...Ch. 14 - Prob. 13EAPCh. 14 - Prob. 14EAPCh. 14 - Prob. 15EAPCh. 14 - Prob. 16EAPCh. 14 - Prob. 17EAPCh. 14 - Prob. 18EAPCh. 14 - Prob. 19EAPCh. 14 - Prob. 20EAPCh. 14 - Prob. 21EAPCh. 14 - Prob. 22EAPCh. 14 - Prob. 23EAPCh. 14 - Prob. 24EAPCh. 14 - Prob. 25EAPCh. 14 - Prob. 26EAPCh. 14 - Prob. 27EAPCh. 14 - Prob. 28EAPCh. 14 - Prob. 29EAPCh. 14 - Prob. 30EAPCh. 14 - Prob. 31EAPCh. 14 - Prob. 32EAPCh. 14 - Prob. 33EAPCh. 14 - Prob. 34EAPCh. 14 - Prob. 35EAPCh. 14 - Prob. 36EAPCh. 14 - Prob. 37EAPCh. 14 - Prob. 38EAPCh. 14 - Prob. 40EAPCh. 14 - Prob. 41EAPCh. 14 - Prob. 42EAPCh. 14 - Prob. 44EAPCh. 14 - Prob. 45EAPCh. 14 - Prob. 46EAPCh. 14 - Prob. 47EAPCh. 14 - Prob. 48EAPCh. 14 - Prob. 49EAPCh. 14 - Solar Energy Output. Observations over the past...Ch. 14 - Prob. 51EAPCh. 14 - Prob. 52EAPCh. 14 - Prob. 54EAPCh. 14 - Prob. 55EAPCh. 14 - Prob. 56EAPCh. 14 - Prob. 57EAPCh. 14 - Solar Power for the United States. Total annual...Ch. 14 - Prob. 59EAPCh. 14 - The Color of a Sunspot. Use Wien’s law (see...Ch. 14 - Prob. 61EAPCh. 14 - Prob. 62EAPCh. 14 - Tire Pressure. Air pressure at sea level is about...Ch. 14 - Personal Energy Content. The average power of a...
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