نیروی الکتروستاتیکی وارد بر هریک از بار های ....
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[HTML]k23=9*10^9 * 2*10^-6 * 4*10-6 \ 9 = 8 *10 ^ -3
k23=k32 >>>>>>> k23= 8 *10 ^ -3
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k21= ??????
bayad az che rahi bedast
ovord man zaviye 60 ro bedast
ovordam bayad az sin va cos estefade kard ?
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age momken hast in tike va baghiye mas ale age monde ro hal konid :D
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in rah ro khodam raftam vali .......
sin 60 = radical 3/2
radikal 3/2 = vatar/1.5 >>> ?????????????????????
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