
#1
Feb405, 06:17 AM

P: 66

there are 2 dipoles. One with electrical moment 10pC*m and other 16pC*m. The distance between 2 dipoles is 20 mm. Dipole moments are located on the same line and are pointed in the same direction. The question is what is the force between 2 dipoles.
What i have achieved so far: i think a way is to use Coulomb`s law. We look one dipole and add the forces that exist in the onepole system. the interaction between two dipoles as simply the sum of four pairwise terms which are dependent on the distances between the four charges of the dipoles (pos1pos2, neg1neg2, pos1neg2 and neg1pos2). i know that p=q*l l is distance between +q and q in one pole. in that summing equation i dont know l1, l2, q1, q2. There is also force of field E. When i have one dipole and whatever distance r from its center then E=k*p/r^3. But how to use this knowledeg remains yet a mystery for me. Can someone help me? 



#2
Feb505, 12:50 AM

HW Helper
Thanks
P: 9,809

ehild 


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