A desktop computer is to be cooled by a fan whose flow rate is \(0.30 \mathrm{~m}^{3} / \mathrm{min}\). Determine the mass flow rate of air through the fan at an elevation of \(3400 \mathrm{~m}\) where the air density is \(0.7 \mathrm{~kg} / \mathrm{m}^{3}\). Also, if the average velocity of air is not to exceed \(95 \mathrm{~m} / \mathrm{min}\), determine the minimum diameter of the casing of the fan. Answers: \(0.00350 \mathrm{~kg} / \mathrm{s}, 0.0634 \mathrm{~m}\)