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Chapter 22: Q. 42 (page 625)
What is the force on the charge in FIGURE P? Give your answer as a magnitude and an angle measured cw or ccw (specify which) from the-axis.
The value of force is and the angle is.
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Suppose there exists a third type of charge in addition to the two types we鈥檝e called glass and plastic. Call this third type charge. What experiment or series of experiments would you use to test whether an object has charge? State clearly how each possible outcome of the experiments is to be interpreted.
In Problems 69 through 72 you are given the equation(s) used to solve a problem. For each of these,
A plastic rod that has been charged to -15 nC touches a metal sphere. Afterward, the rod鈥檚 charge is -10 nC.
a. What kind of charged particle was transferred between the rod and the sphere, and in which direction? That is, did it move from the rod to the sphere or from the sphere to the rod?
b. How many charged particles were transferred?
A plastic balloon that has been rubbed with wool will stick to a wall. Can you conclude that the wall is charged? If so, where does the charge come from? If not, why does the balloon stick?
What are the electric fields at points 1, 2, and 3 in FIGURE P22.64? Give your answer in component form.
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