A substance is taken through the illustrated cycle in Fig. 12-3 from (p1,v1 ) to (3p1,2v1 ) to (p1,2v1 ) back to (p1, v1). How much work was done?
A) p1v1
B) 2p1v1
C) 4p1v1
D) 5p1v1
E) 3p1v1
A
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Magnetism had been a known phenomenon for some time before its relation to electric currents was found. That a current in a wire produces a magnetic field was discovered by:
a. Maxwell. b. Ampere. c. Oersted. d. Tesla.
Thermodynamic Devices: An ideal Carnot engine is operated as a heat pump to heat a room in the winter. The heat pump delivers heat to the room at the rate of 47 kJ per second and maintains the room at a temperature of 293 K when the outside temperature is 237 K. The power requirement to run the heat pump under these operating conditions is closest to
A. 9000 W. B. 7100 W. C. 20,000 W. D. 15,000 W. E. 11,000 W.
What is the direction of 
in the wave as it passes S?
A. A B. B C. C D. D E. Toward the viewer. F. Away from the viewer. T. The vector is zero. G. AA H. BB I. CC J. DD
The process of making an uninhabitable planet like Mars habitable and suitable for humans is referred to as
A) bioforming B) bioadaptation C) terra-restructuring D) terraforming