A positive charge of 5.20 μC is fixed in place. From a distance of 4.40 cm a particle of mass 5.20 g and charge +3.10 μC is fired with an initial speed of 80.0 m/s directly toward the fixed charge. How close to the fixed charge does the particle get before it comes to rest and starts traveling away?
Here,
let the closest distance from the charge is x
Using conservation of energy
initial mechanical energy = final mechanical energy
9 *10^9 * 5.2 *10^-6 * 3.1 *10^-6/(0.044) + 0.50 * 0.0052 * 80^2 = 9 *10^9 * 5.2 *10^-6 * 3.1 *10^-6/(x)
solving for x
x = 0.00727 m = 0.727 cm
the closest distance is 0.727 cm
A positive charge of 5.20 μC is fixed in place. From a distance of 4.40 cm...
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