What is the net force the asteroids exert upon each other?

D

Duc D

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An asteroid of mass 4.9×10^4 kg carrying a negative charge of 23.8 muC is 200 m from a second asteroid of mass 7.0×10^4 kg carrying a negative charge of 24.8 muC. What is the net force the asteroids exert upon each other? (G = 6.673 × 10-11 N*m^2/kg^2} and k = 9.0 × 10^9 N *m^2/C^2

Possible answers:
1.3×10^8 N
1.4×10^-4 N
5.7×10^-6 N
1.3×10^-4 N

Please show your work.Thanks
 
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