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Chapter 22: Q. 31 - Excercises And Problems (page 625)
The electric field 2.0 cm from a small object points away from the object with a strength of 270,000 N/C. What is the object鈥檚 charge?
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Charged plastic and glass rods hang by threads.
a. An object repels the plastic rod. Can you predict what it will do to the glass rod? If so, what? If not, why not?
b. A different object attracts the plastic rod. Can you predict what it will do to the glass rod? If so, what? If not, why not?
Figure showed how an electroscope becomes negatively charged. The leaves will also repel each other if you touch the electroscope with a positively charged glass rod. Use a series of charge diagrams to explain what happens and why the leaves repel each other.
Reproduce FIGURE on your paper. Then draw a dot (or dots) on the figure to show the position (or positions) where an electron would experience no net force.
The force on the nCcharge is as shown inFIGURE CP22.76.What is the magnitude of this force?
In Problems 69 through 72 you are given the equation(s) used to solve a problem. For each of these,
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