A linear charge of nonuniform density ? = bx, where b = 2.1 nC/m2, is distributed along the x axis from x = 2.0 m to x = 3.0 m. Determine the electric potential (relative to zero at infinity) of the point y = 4.0 m on the y axis
a. 36 V
b. 95 V
c. 10 V
d. 17 V
e. 15 V
c
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Two different masses have equal, non-zero kinetic energies. The momentum of the smaller mass is
A) smaller than the momentum of the larger mass. B) larger than momentum of the larger mass. C) equal to the momentum of the larger mass. D) zero. E) There is not enough information to answer the question.
In which of the following contexts can Gauss’s law not be readily applied to find the electric field?
1.near a long, uniformly charged wire 2.above a large, uniformly charged plane 3.inside a uniformly charged ball 4.outside a uniformly charged sphere 5.Gauss’s law can be readily applied to find the electric field in all these contexts.
Oscillations in the early universe are most similar to:
A) water waves. B) sound waves. C) light waves. D) seismic waves. E) oscillations of stars in the instability strip of the H-R diagram.
Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1 is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown
 The force F2 in pounds needed to keep piston 2 in place is a. 0.25. b. 0.4. c. 4. d. 10. e. 40.