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Medical College Admission Test
Chemical and Physical Foundations of Biological Systems

Echolocation and Speed of Sound

Very Hard Physics Waves And Sound

A scientist is studying the acoustic properties of a unique biological system, the echolocation of bats. Bats emit sound waves that can travel through the air and bounce off various objects, allowing the bats to locate prey and navigate their environment. The scientist recorded a specific sound wave with a frequency of 40 kHz and observed its behavior in an environment with varying temperature and humidity.

In this scenario, the speed of sound in air is affected by both temperature and humidity. The scientist knows that at room temperature (approximately 20°C), the speed of sound in dry air is about 343 m/s. As the temperature increases, the speed of sound increases approximately by 0.6 m/s for every degree Celsius increase. Additionally, high humidity enhances the speed of sound in air. The scientist finds that the measured speed of sound in the environment during the experiment is 350 m/s.

Based on these observations, what can be concluded about the effect of temperature and humidity on the speed of sound in the medium?

Hint

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