Two charges of # -4 C # and # -2 C# are positioned on a line at points # -1 # and # 14 #, respectively. What is the net force on a charge of # -2 C# at # 1 #?

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Answer 1 · 2016-05-01T13:38:14

#"The magnitude of the net force " |F|=1,779*10^10 " N"#

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#F_A=(k*(-4)*(-2))/2^2=(8k)/4=2k#

#F_B=(k*(-2)*(-2))/13^2=(4k)/169#

#F_A > F_B#

#F_"net"=F_A-F_B#

#F_"net"=2k-(4k)/169#

#F_"net"=(338k-4k)/169#

#F_"net"=(334k)/169#

#k=9*10^9 N*m^2*C^-2#

#F_"net"=(334*9*10^9)/169#

#F_"net"=17,79*10^9#

#F_"net"=1,779*10^10 " N"#