I need a step by step for this problem dealing with charges.

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The problem involves calculating the force between two charged balloons, one with a charge of +3.37 mC and the other with -8.21 mC, separated by a distance of 2.00 m. The initial calculation used the formula for electric force but yielded an incorrect result. The correct approach requires ensuring the charges are expressed in coulombs, as the units used in the calculation were incorrect. The final answer should be approximately 0.0627 N, highlighting the importance of unit conversion in physics problems. Accurate unit usage is crucial for obtaining the correct force value.
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Homework Statement


There are two balloons of charges +3.37mC and -8.21mC. The distance between the two balloons is 2.00m. Determine the force between the two balloons.


Homework Equations





The Attempt at a Solution


Here’s my work:

(9.0×10^9Nm^2/C^2)((3.37mC)(8.21mC)/(2.00m)^2)

3.37*8.21=27.6677

2.00^2=4.00

27.6677/4.00=6.916925

6.916925*9.00×10^9=62.252325×10^9=6.2×10^10

It's not right though. The right answer is 0.0627 N
 
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Check the units you've used for the charge of the balloons.
 

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