Question: A weak pressure wave (sound wave), with a pressure change p 40 Pa, propagates through still air at 20C and 1 atm. Estimate (a) The

A weak pressure wave (sound wave), with a pressure change Δp ≈ 40 Pa, propagates through still air at 20°C and 1 atm. Estimate
(a) The density change;
(b) The temperature change; and
(c) The velocity change across the wave.

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