A charge of 50 nC is uniformly distributed along the y axis from y = 3.0 m to y = 5.0 m. What is the magnitude of the electric field at the origin?
a. 18 N/C
b. 50 N/C
c. 30 N/C
d. 15 N/C
e. 90 N/C
c
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Monatomic, diatomic, and polyatomic ideal gases each undergo slow adiabatic expansions from the same initial volume and the same initial pressure to the same final volume. The magnitude of the work done by the environment on the gas:
A. is greatest for the polyatomic gas B. is greatest for the diatomic gas C. is greatest for the monatomic gas D. is the same only for the diatomic and polyatomic gases E. is the same for all three gases
The extraordinary blueness in lakes in the Canadian Rockies is the result of
A) high-altitude refraction of light. B) glacial silt in the water scattering blue light. C) the unique temperatures of these lakes throughout most of the year. D) none of the above
Water flows out of a large reservoir through a pipe that opens to the atmosphere 5.70 m below the level of the water in the reservoir. What is the speed of the water as it comes out of the pipe?
A) 1.72 m/s B) 7.47 m/s C) 55.8 m/s D) 10.6 m/s E) 27.9 m/s
A solid uniform sphere is rolling without slipping along a horizontal surface with a speed of 5.5 m/s
when it starts up a ramp that makes an angle of 25° with the horizontal. What is the speed of the sphere after it has rolled 3.0 m up as measured along the surface of the ramp? A) 4.0 m/s B) 8.0 m/s C) 1.9 m/s D) 2.2 m/s E) 3.5 m/s