Example 1.4 Coulomb's law for electrostatic force between two point
charges and Newton's law for gravitational force between two
stationary point masses, both have inverse-square dependence on
the distance between the charges/masses. (a) Compare the strength
of these forces by determining the ratio of their magnitudes (i) for an
electron and a proton and (ii) for two protons. (b) Estimate the
accelerations of electron and proton due to the electrical force of their
mutual attraction when they are 1 Å (= 10-10
= 1.67 x
10
= 9.11 x 10-31 kg)
m) apart? (m
-27
kg
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like charge repel each other
unlike charge attached each other.
f=1/4π€°×q1q2/r2
f = 1/r3
unlike charge attached each other.
f=1/4π€°×q1q2/r2
f = 1/r3
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