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pentazoid

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## Homework Statement

If you poke a hole in a container full of gas, the gas will start leaking out. In this problem you will make a rough estimate of the rate at which gas escapes through a hole.

Your bicycle tire has a slow leak, so that it goes flat within about an hour after being inflate. Rougly how big is the hole? (use any reasonable estimate for the volume of the tire.)

## Homework Equations

N(t)=N(0)exp(-t/tau), tau being the characteristic time.

dN/dt=-A/2V*sqrt(kT/m)*N

## The Attempt at a Solution

By rouglhly how big is the hole, do they want me to guesstimate the volume of the tire?