Physics - AQA GCSE: What is the Atmospheric pressure at sea level & at the Cruising altitude of a passenger plane (why must aircrafts be pressurised?)

Question

What is the Atmospheric pressure at sea level & at the Cruising altitude of a passenger plane (why must aircrafts be pressurised?)

Miqdaam Hamed Hassan · Accepted Answer

at sea level: 101,000 Pa (101 kPa)
Cruising altitude of a passenger plane: 27,000 Pa (27 kPa) ∴ air crafts must be pressurised as humans cannot take in oxygen quickly enough to meet their bodies’ needs

Physics - AQA GCSE

What is the Atmospheric pressure at sea level & at the Cruising altitude of a passenger plane (why must aircrafts be pressurised?)

At sea level: 101,000 Pa (101 kPa) Cruising altitude of a passenger plane: 27,000 Pa (27 kPa) ∴ air crafts must be pressurised as humans cannot take in oxygen quickly enough to meet their bodies’ needs

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