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Chapter 23: Q. 17 (page 654)
The electric field strengthfrom the surface of adiameter metal ball is. What is the charge on the ball?
Charge on the ball is.
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Air "breaks down" when the electric field strength reaches , causing a spark. A parallel-plate capacitor is made from two electrodes. How many electrons must be transferred from one electrode to the other to create a spark between the electrodes?
In Problems 63 through 66 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
What are the strength and direction of the electric field at the position indicated by the dot in ? Give your answer in component form and as a magnitude and angle measured or (specify which) from the positive -axis.
A long thin rod has the nonuniform charge density , where localid="1648623923714" is measured from the center of the rod. What is the total charge on the rod?
Hint: This exercise requires an integration. Think about how to handle the absolute value sign.
A positron is an elementary particle identical to an electron except that its charge is . An electron and a positron can rotate about their center of mass as if they were a dumbbell connected by a massless rod. What is the orbital frequency for an electron and a positron apart?
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