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Farah is doing an experiment that involves calculating the speed of a longitudinal wave. What will most likely happen if she increases the temperature in the room?
The amplitude of the wave will increase.
The amplitude of the wave will decrease.
The speed of the wave will increase.
The speed of the wave will decrease.
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GPT-5 mini
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The speed of the wave will increase.
Explanation: For a longitudinal (sound) wave in a gas, v = sqrt(γRT/M) (or v ∝ sqrt(T)), so raising the temperature raises the average molecular kinetic energy and increases the speed of sound (e.g., ~331 m/s at 0°C to ~343 m/s at 20°C).
Explanation: For a longitudinal (sound) wave in a gas, v = sqrt(γRT/M) (or v ∝ sqrt(T)), so raising the temperature raises the average molecular kinetic energy and increases the speed of sound (e.g., ~331 m/s at 0°C to ~343 m/s at 20°C).
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