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Two particles each of mass m and charge q are separated by r1 and the system is left free to move at t=0 At t=t both the particles are found to be separated by r2. The speed of each particle is?
repulsive electrostatic force: attractive gravitational force: F1=kQ^2/r^2 F2=Gm^2/r^2 for equilibrium :F1=F2 kQ2/r2=Gm2/r2 => Q/m = (6.6*10^-11/9*10^9)1/2 => Q/m=0.8*10-10 Hence, ORDER OF Q/m=10-10
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