2) Three point charges are on the x-axis as shown. The middle charge +Q/2 is a distance d from a-2Q charge on the left, and a distance 2d from a +2Q charge on the right. What is the net electric force on the +Q/2 middle charge? (As usual, a force to the right is positive and a force to the left is negative.) 3) If I have two charges but I am free to choose the charges and magnitude of either of them. In what situation can there be a charge between them which feels zero force?
2) Three point charges are on the x-axis as shown. The middle charge +Q/2 is a distance d from a-2Q charge on the left, and a distance 2d from a +2Q charge on the right. What is the net electric force on the +Q/2 middle charge? (As usual, a force to the right is positive and a force to the left is negative.) 3) If I have two charges but I am free to choose the charges and magnitude of either of them. In what situation can there be a charge between them which feels zero force?
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+Q/2
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2) Three point charges are on the x-axis as shown. The middle charge +Q/2 is a distance d from
a-2Q charge on the left, and a distance 2d from a +2Q charge on the right. What is the net
electric force on the +Q/2 middle charge? (As usual, a force to the right is positive and a
force to the left is negative.)
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000
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3) If I have two charges but I am free to choose the charges and magnitude of either of them. In
what situation can there be a charge between them which feels zero force?
2d
2
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