Using , , proton mass , proton charge and separation , find the order of magnitude of…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Using

G = 6.67\times10^{-11}\,\text{N\,m}^2\text{/kg}^2

k = 9.0\times10^{9}\,\text{N\,m}^2\text{/C}^2

, proton mass

m_p = 1.67\times10^{-27}\,\text{kg}

, proton charge

q_p = 1.6\times10^{-19}\,\text{C}

and separation

r = 1.0\times10^{-10}\,\text{m}

, find the order of magnitude of the ratio

\dfrac{F_{\text{em}}}{F_{\text{grav}}}

between two protons. (a)

10^{42}

(b)

10^{35}

(c)

10^{36}

(d)

10^{28}