Question

Частота звуковой волны 725 Гц. Определите его скорость в воздухе, воде и стекле.​

Answer 1

Объяснение:

... ..................

Answer 2

Calculation of Sound Speed in Air, Water, and Glass

To determine the speed of sound in different mediums, we need to use the formula:

Speed of Sound = Frequency × Wavelength

The frequency of the sound wave is given as 725 Hz. To calculate the speed of sound in air, water, and glass, we need to know the corresponding wavelengths in each medium.

1. Speed of Sound in Air: - The speed of sound in air at room temperature is approximately 343 meters per second (m/s). - To calculate the wavelength in air, we can use the formula:

Wavelength = Speed of Sound / Frequency

Substituting the given values:

Wavelength in air = 343 m/s / 725 Hz

Wavelength in air ≈ 0.4731 meters (m)

- Therefore, the speed of sound in air is approximately 343 m/s.

2. Speed of Sound in Water: - The speed of sound in water is approximately 1482 meters per second (m/s). - Using the same formula as above:

Wavelength in water = 1482 m/s / 725 Hz

Wavelength in water ≈ 2.0421 meters (m)

- Thus, the speed of sound in water is approximately 1482 m/s.

3. Speed of Sound in Glass: - The speed of sound in glass can vary depending on the type of glass and its composition. - The speed of sound in common glass is approximately 4540 meters per second (m/s). - Applying the formula:

Wavelength in glass = 4540 m/s / 725 Hz

Wavelength in glass ≈ 6.2689 meters (m)

- Hence, the speed of sound in glass is approximately 4540 m/s.

Please note that the values provided are approximate and can vary depending on various factors such as temperature, pressure, and the specific properties of the medium.

Let me know if there's anything else I can help you with!