A new electric power plant has an efficiency of 42%. For every 100 barrels of oil needed to run the turbine, how many are essentially lost as waste heat (in barrels of oil) to the environment?
a. 21
b. 42
c. 58
d. 10
e. 79
C
Physics & Space Science
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Which of the following is a primary cause of volcanoes earthquakes and mountain building?
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Neptune has a highly tilted rotation axis, much like Uranus, and very unlike Saturn's
Indicate whether the statement is true or false
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The figure below shows a planet traveling in a clockwise direction on an elliptical path around a star located at one focus of the ellipse. When the planet is at point A,
A. its speed is constant. B. its speed is increasing. C. its speed is decreasing. D. its speed is a maximum. E. its speed is a minimum.
Physics & Space Science
A camera uses a
a. converging lens to form a real image. b. converging lens to form an imaginary image. c. diverging lens to form a real image. d. diverging lens to form an imaginary image.
Physics & Space Science