A light bulb manufacturer wishes to evacuate bulbs by putting a tiny 0.5 mm diameter hole in each bulb and then placing it in a vacuum. The air in the bulb is at a temperature of 290 K and has a volume of 200 cm3. The average mass of an air molecule is 4.8 × 10-26 kg. How much time is required before the amount of air inside the bulb is reduced to 10-6 times its previous value?

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