During an isothermal process, 5.0 J of heat is removed from an ideal gas. What is the work done by the gas in the process?
A) 0 J
B) 5.0 J
C) -5.0 J
D) -10 J
C
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In the Orion constellation are stars Rigel, a blue supergiant, and Betelgeuse, a red supergiant. Which star has a greater surface temperature?
A. Rigel B. Betelgeuse C. They have the same surface temperature. D. There is not enough information to tell.
A huge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. The upper face carries +95.0 nC/m2 while the lower face carries -25.0 nC/ m2
What is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (?0 = 8.85 × 10-12 C2/N ? m2) A) 0.00 N/C B) 3.95 × 103 N/C C) 6.78 × 103 N/C D) 7.91 × 103 N/C E) 1.36 × 104 N/C
Free or low-cost ______ images, including photographs and clip art, are available online.
A. stock B. generic C. spec D. streaming
Ultraviolet light has ________ wavelength and ________ frequency relative to visible light.
A. shorter; larger B. longer; smaller C. longer; larger D. shorter; smaller