andreavwinter andreavwinter

27-03-2021
Physics

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What is the force between two balloons with a negative charge of 1.6 ✕ 10 to power of -10 C if the balloons are 7.6 cm apart?

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keijosalonen keijosalonen

27-03-2021

Answer: 4.0·10^-8 N

Explanation: both forces are negative so force is repulsive

F = k q1·q2 /r². K = Coulomb's constant 9·10^ 9 Nm²/C².

Both Charges are -1.6·10^-10 C and r= 0.076 m

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