The gas in a perfectly insulated but there is work done on the flexible container at a rate of - At what rate is the internal (thermal) energy of the gas changing?
A) -13 W
B) 13 W
C) 0 W
D) 6.5 W
A
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Indicate whether the statement is true or false
If a star with an absolute magnitude of x 5 has an apparent magnitude of +5, then its distance is
a. 1 pc. b. 10 pc. c. 100 pc. d. 1000 pc. e. 10,000 pc.
Carnot Engine: The ocean thermal energy conversion project uses the surface water near tropical islands with a temperature of 20°C as the hot temperature reservoir, and the water at some depth, with a temperature of 5.0°C, as the cold temperature reservoir for a heat engine. What is the maximum possible efficiency of an engine running between those two temperatures?
A. 4.7% B. 5.1% C. 7.9% D. 15% E. 30%
A 1.0 kg mass is connected to a spring with a spring constant of 9.00 N/m. If the initial velocity is 0.0 cm/s and the initial displacement is 2.0 cm, then what is the maximum kinetic energy of the simple harmonic motion?
A. 0.014 J B. 0.0090 J C. 0.0075 J D. 0.0018 J E. 0.0012 J