A charge of #-2 C# is at #(-2 , 3 )# and a charge of #-1 C# is at #(8,-2 ) #. If both coordinates are in meters, what is the force between the charges?

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Answer 1 · 2016-05-19T19:47:31

#F=1.44*10^8N#

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#" distance between "Q_1 " and "Q_1 " : r=sqrt((-2-3)^2+(8+2)^2)#

#r=sqrt((-5)^2+10^2)" "r=sqrt(25+100)" "r=sqrt(125)" "r^2=125#

#F=k*(Q_1*Q_2)/r^2#

#F=9*10^9((-2)*(-1))/125#

#F=(18*10^9)/125#

#F=1.44*10^8N#