In a combustion process, gasoline particles are to be dropped in air at \(200^{\circ} \mathrm{F}\). The particles must drop at least \(10 \mathrm{in}\). in \(1 \mathrm{~s}\). Find the diameter \(d\) of droplets required for this. (The drag on these particles is given by \(F_{D}=3 \pi \mu V d\), where \(V\) is the particle speed and \(\mu\) is the air viscosity.