two point charges, each of 4 u C when placed in vacuum,
repel each other with a force of 1.6 Newton. Calculate
the distance beth the 2 charges.
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The distance between the two charges is 3*10^5 m.
Known formula for the force on point charges is -
F = k*q1*q2/r²
Value of k for vacuum is 9*10^9 Nm²/C².
R² = 9*10^9*4*4/1.6
R² = 9*10^10
R= 3*10^5 m.
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