kaplan lesson book question

[enamine]

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okay, on p.113 of the kaplan lesson book, what is the correct answer to the multiple choice question?

thanks

 

[MeowMix]

can you be more specific (subject, lesson #, topic)? lesson book page numbers change, and I have nothing on p. 113.

 

[enamine]

oh , oops, it's in the electrostatics session
(physics lesson 2) and it's a question that asks you to find the velocity of a charge that is -3q and mass 3m and at an infinite distance to another charge q.... ??

 

[MeowMix]

Sorry, can't help - the book has changed and this problem is no longer in there.

But at infinite distance, you can determine that F=0 due to the other point charge. Without seeing the problem, I can't guess any more than that.

 

[Kry]

The answer is C. It is a VERY difficult question.