Find the charge of the sphere (q2)

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The discussion focuses on calculating the charge of a sphere (q2) using a diagram and provided information. Participants suggest writing out the equation that represents the sum of the charges to clarify the problem. There is an emphasis on ensuring all relevant data is considered in the calculations. The conversation highlights the importance of visual aids in solving physics problems. Ultimately, the goal is to derive the unknown charge from the established relationships between the charges.
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Homework Statement
Two small spheres (q1& q2) have different charges that add up to 5.0x10^-5 C. If they repel each other with a force of Fe = 1.0 N at a distance of 2.0 m apart, what is the charge on q2?
Relevant Equations
Electric force formula

Fe= (k*q1*q2)/r^2

Electric Field Formula

E=(k*q1)/r^2

where k is a constant 9x10^9 N*m^2/kg^2
I drew a diagram using all of the information

hw1.jpg


however, I am stuck and not to sure how to get one of the charges
 
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Try writing out the equation that says the charges add up to…

See if that gives you enough info.
 
Thread 'Correct statement about size of wire to produce larger extension'

Thread 'Correct statement about size of wire to produce larger extension'

The answer is (B) but I don't really understand why. Based on formula of Young Modulus: $$x=\frac{FL}{AE}$$ The second wire made of the same material so it means they have same Young Modulus. Larger extension means larger value of ##x## so to get larger value of ##x## we can increase ##F## and ##L## and decrease ##A## I am not sure whether there is change in ##F## for first and second wire so I will just assume ##F## does not change. It leaves (B) and (C) as possible options so why is (C)...
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