A nonuniform linear charge distribution given by ?(x) = bx, where b is a constant, is distributed along the x axis from x = 0 to x = +L. If b = 40 nC/m2 and L = 0.20 m, what is the electric potential (relative to a potential of zero at infinity) at the point y = 2L on the y axis?
a. 19 V
b. 17 V
c. 21 V
d. 23 V
e. 14 V
b
You might also like to view...
Which of the following statements is true of the solar wind?
A) It makes the Sun gain mass. B) It can be considered an extension of the corona. C) It makes the gases from the solar atmosphere flow along the magnetic fields that point inward. D) It refers to slow-moving atoms and ions that enter the solar corona.
Suppose that we place an aluminum cylinder, a wooden block, and a Styrofoam cup on a table and leave them there for several hours. We then come back into the room and feel each object. (a) Which (if any) feels coolest?
A. The aluminum cylinder B. The wooden block C. The Styrofoam cup D. All are the same.
A woman is straining to lift a large crate, without success because it is too heavy
We denote the forces on the crate as follows: P is the upward force the woman exerts on the crate, C is the vertical contact force exerted on the crate by the floor, and W is the weight of the crate. How are the magnitudes of these forces related while the woman is trying unsuccessfully to lift the crate? A) P + C = W B) P + C < W C) P + C > W D) P = C
The distance traveled by a dropped object in free fall is directly proportional to
a. the time squared. b. its weight. c. its mass. d. none of these.