# 28 - MasteringPhysics Assignment Print View 02:22 PM...

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04/19/2007 02:22 PM MasteringPhysics: Assignment Print View Page 2 of 16 http://session.masteringphysics.com/myct/assignmentPrint?assignmentID=1064958 ANSWER: = Answer not displayed Part E The field found in this problem for a moving charge is the same as the field from a current element of length carrying current provided that the quantity is replaced by which quantity? Hint E.1 Making a correlation Hint not displayed ANSWER: Answer not displayed Force between Moving Charges Two point charges, with charges and , are each moving with speed toward the origin. At the instant shown is at position (0, ) and is at ( , 0). (Note that the signs of the charges are not given because they are not needed to determine the magnitude of the forces between the charges.) Part A What is the magnitude of the electric force between the two charges? Hint A.1 Which law to use Apply Coulomb's law: where is the distance between the two charges. Part A.2 Find the value of What is the value of for the given situation? Express your answer in terms of . ANSWER: = Express in terms of , , , and . ANSWER: = Part B What is the magnitude of the magnetic force on due to the magnetic field caused by ?
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