Question: A 180-1b man parachutes from a plane using a hemispherical parachute in air at (20^{circ} mathrm{F}) and (14.60 mathrm{psia}). Calculate the parachute diameter required for

A 180-1b man parachutes from a plane using a hemispherical parachute in air at $20^{\circ} \mathrm{F}$ and $14.60 \mathrm{psia}$. Calculate the parachute diameter required for the man's terminal velocity not to exceed $20 \mathrm{ft} / \mathrm{s}$. Neglect the weight of the parachute.

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