Answer
Since $$ \Delta p_{m} \propto s_{m} \propto \sqrt{I}, $$ we transform the above relation into a ratio and substitute values into it: $$ \Delta p_{m 1} / \Delta p_{m 2}=\sqrt{I_{1} / I_{2}}=\sqrt{5.0 \times 10^{3}}=71 $$
Work Step by Step
since $$ \Delta p_{m} \propto s_{m} \propto \sqrt{I}, $$ we transform the above relation into a ratio and substitute values into it: $$ \Delta p_{m 1} / \Delta p_{m 2}=\sqrt{I_{1} / I_{2}}=\sqrt{5.0 \times 10^{3}}=71 $$