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Two electric dipoles with charges +/-Q, where Q = 5 mC. The charges +/-Q on the

ID: 2224637 • Letter: T

Question

Two electric dipoles with charges +/-Q, where Q = 5 mC. The charges +/-Q on the left are attached to each other by a rigid rod, and the two charges on the right are also rigidly attached to each other. Find the magnitude of the electric force between the two dipoles. Hint:Look at the forces on one of the particles say the positive q on the left dipole. Then write two different force equations on it. One based on the OPPOSITE +q and one on the OPPOSITE -q. For the -q this answer will be at a certain angle. You need to find the X component of this force. Then combine the two answers you have and have the total force on the +q particle on the left dipole. You could repeat these steps for the -q particle on the left dipole but the calculations will be the same so you just need to multiply your answer by 2 to get your final answer. Only the ex-component of the total force survives, the y-components of the forces cancel, once you have added all four forces. Thus, in this case the magnitude is just the absolute value of the x-component

Explanation / Answer

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