Homework Answers
Part A)
q = charge on each sphere = 4 x 10-6 C
r = distance between the spheres = 84.5 cm = 0.845 m
Fr = repulsive force between two spheres = ?
using Coulomb's law , repulsive force between the two spheres is given as
Fr = k q2/r2
Fr = (9 x 109) (4 x 10-6)2/(0.845)2
Fr = 0.202 N
b)
m = mass of each sphere = 0.0275 kg
a = acceleration
acceleration is given as
a = Fr /m
a = 0.202/0.0275
a = 7.35 m/s2
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