If you are trapped in a room of dimension 10m x 10m x 10m, how long can you survive? Assume that the room is completely sealed and nothing (not even air) can come inside.
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We can survive for around 1 week
Explanation:
Volume of room = 10 * 10 * 10 = 1000 m³
1 m³ = 1000 litre
Hence Volume of room = 1000 * 1000 = 10⁶ Litre
% of oxygen in air = 21 %
Oxygen volume = (21/100) * 10⁶ Litre
= 21 * 10⁴ Litre
Inhaled air is about 20-percent oxygen. Exhaled air is about 15-percent oxygen.
Oxygen required per day = 550 litre
Air enough to survive for = 21 * 10⁴/550 = 382 day
Without food we can survive for 20-30 days
Without Water We can survive for around 1 week
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