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OpenStudy (kmazraee):
do we calculate the sign of charges in Colomb's law? if yes why and if no why?
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OpenStudy (anonymous):
yes,if it's negative it is a attraction force,other wise it will be repulsion force
OpenStudy (kmazraee):
then this sign will be written in equation?
OpenStudy (anonymous):
yes
OpenStudy (kmazraee):
so the direction of force?
OpenStudy (anonymous):
since force is a vector
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OpenStudy (anonymous):
but the sense will be modified by your referential
OpenStudy (anonymous):
you will have two charges,the force will have different directions
OpenStudy (anonymous):
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