Chapter 23: Q. 72 (page 657)
A proton orbits a long charged wire, making revolutions per second. The radius of the orbit is . What is the wire’s linear charge density?
Short Answer
The wire’s linear charge density is
Chapter 23: Q. 72 (page 657)
A proton orbits a long charged wire, making revolutions per second. The radius of the orbit is . What is the wire’s linear charge density?
The wire’s linear charge density is
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Get started for freeYour physics assignment is to figure out a way to use electricity to launch a small -long plastic drink stirrer. You decide that you’ll charge the little plastic rod by rubbing it with fur, then hold it near a long, charged wire, as shown in FIGURE P23.56. When you let go, the electric force of the wire on the plastic rod will shoot it away. Suppose you can uniformly charge the plastic stirrer to and that the linear charge density of the long wire is . What is the net electric force on the plastic stirrer if the end closest to the wire is away?
Hint: The stirrer cannot be modeled as a point charge; an integration is required.
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(a) Q is doubled,
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(c) d is doubled? Each part changes only one quantity; the other quantities have their initial values
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What are the strength and direction of the electric field at the position indicated by the dot in FIGURESpecify the direction as an angle above or below horizontal.
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