Electric potential: finding speed and distance?

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Homework Help Overview

The discussion revolves around a problem in electrostatics involving two charges and their behavior in an electric field. The original poster presents a scenario where a charge is released from a specific position, and questions are raised about its speed at infinity and the distance at which it reaches half that speed.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants explore the relationship between electric potential and the speed of the charge as it moves away from the origin. There are inquiries about the voltage at the release point and how it relates to the problem. Some participants express uncertainty about the relevant equations and concepts needed to solve the problem.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the concepts involved. Some guidance has been offered regarding the relationship between voltage and charge, though there is a lack of consensus on how to apply this to the specific questions posed. The original poster and others express confusion about the information provided in the problem statement.

Contextual Notes

Participants note that the problem does not provide certain information, such as the voltage at the release point, which may be necessary for solving the questions. There is also a mention of the need for specific equations that may not have been included in the original problem description.

papi
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A charge of 3.45 micro C is held fixed at the origin. A second charge of 3.45 micro C (micro = x10^-6) is released at the position (1.15m, .77 m).

a. If the mass of the second charge is 2.3 g, what is the speed when it moves infinately far from the origin?

b. At what distance from the origin does the 3.45 micro C charge attain half the speed it will have at infinity?

I tried very hard to use the equations I know but am unaware of the ones that can be useful here.
 
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What is the Voltage at the point it was released?
 
I don't know, that's all the question included...
 
papi said:
I don't know, that's all the question included...

That's not a given, but it's something you could figure out.

And if you did ... you could answer the question pretty directly.
 
all I know for that is Q=CV which doesn't seem to help
can you please be more specific bc you're not helping me understand this. thanks
 

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