OpenStudy (kmazraee):

do we calculate the sign of charges in Colomb's law? if yes why and if no why?

6 years ago
OpenStudy (anonymous):

yes,if it's negative it is a attraction force,other wise it will be repulsion force

6 years ago
OpenStudy (kmazraee):

then this sign will be written in equation?

6 years ago
OpenStudy (anonymous):

yes

6 years ago
OpenStudy (kmazraee):

so the direction of force?

6 years ago
OpenStudy (anonymous):

since force is a vector

6 years ago
OpenStudy (anonymous):

but the sense will be modified by your referential

6 years ago
OpenStudy (anonymous):

you will have two charges,the force will have different directions

6 years ago
OpenStudy (anonymous):

|dw:1341345754546:dw|

6 years ago