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Chapter 25: Q. 36 (page 711)
A 5.0-cm-diameter metal ball has a surface charge density of . How much work is required to remove one electron from this ball?
The work is needed to remove one electron from the ball is
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What is the escape speed of an electron launched from the surface of a 1.0-cm-diameter glass sphere that has been charged to 10 nC?
In Problems 74 through 76 you are given the equation(s) used to solve a problem. For each of these,
a. Write a realistic problem for which this is the correct equation(s).
b. Finish the solution of the problem.
76.
In FIGURE EX25.26, a proton is fired with a speed of 200,000 m/s from the midpoint of the capacitor toward the positive plate.
a. Show that this is insufficient speed to reach the positive plate.
b. What is the proton’s speed as it collides with the negative plate?
The arrangement of charges shown in FIGURE P25.68 is called a linear electric quadrupole. The positive charges are located at. Notice that the net charge is zero. Find an expression for the electric potential on the y-axis at distances. Give your answer in terms of the quadrupole moment,.
FIGURE P25.66 shows two uniformly charged spheres.
What is the potential difference between points?
Which point is at the higher potential?
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