Coulomb's law for electrostatic force between two point charges and Netwon's law for gravitational force between stationary point masses, both have inverse square dependence on the distance between the charges `//` masses .
(i) Compare the strength of these forces by determining the ratio of their magnitudes.
(i) For an electron and a proton.
(ii) for two protons
(2) Estimate the accelerations of electron and proton due to the electrical force of their mutual attraction when they are `1 Å( 10^(-10)m) ` apart `( m_(p) = 1.67 xx 10^(-27) kg, m_(e ) = 9.11 xx 10^(-31) kg)`

Explanation

(a) (i) `|(F_(e ))/(F_(G))| = 2.4 xx 10^(19)`
(ii) `| (F_(e ) )/( F_(G))| = 1.3 xx 10^(36)`
(b) `a_(e ) = (e^(2))/( 4pi epsilon_(0)r^(2) m_() e)= 2.5 xx 10^(22) m //s^(2) , a_(p) = ( e^(2))/( 4pi epsilon_(0)r^(2) m_(p))= 1.4 xx 10^(19) m//s^(2)`