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Force of 2 Point Charges 
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#1
Jul406, 04:52 PM

P: 16

I've been working on the following problem but when I try my answer online, it keeps coming up as incorrect. A charge Q1=9.4 C is 4.8 m from a charge Q2 = 3.6 C. What is the magnitude of the electrostatic force on Q1?
I'm pretty sure for this its just Coulomb's Law so: F = (k(Q1*Q2))/r^2 F = ((8.9876*10^9)(9.4*3.6))(4.8^2) F ~ 1.32 * 10^10 N Taking into account sig. figs, my final answer is 1.3*10^10 N. \ However, this keeps coming up as incorrect. Am I overlooking something? Thanks in advance for the help! 


#2
Jul406, 05:01 PM

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Patrick 


#3
Jul406, 05:09 PM

P: 16

Yep, I just looked it over again and all charges are given in Coulomb's. I think I might email my professor to see if he can look it over. Perhaps its a bug in the online grading system? I'm fairly confident in my answer. Thanks for looking it over!



#4
Jul406, 05:11 PM

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Force of 2 Point Charges
Best luck! Patrick 


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