Speed of Sound in Air Problem- Is this correct?

In summary, the formula for calculating the speed of sound in air is v = 331.4 + 0.6T, where v is the speed of sound in meters per second and T is the temperature in degrees Celsius. Air temperature affects the speed of sound by increasing it as the temperature increases, due to the increased kinetic energy of warmer air molecules. The speed of sound in air is not constant, but can be considered relatively constant at a given temperature and humidity level. Humidity has a small effect on the speed of sound, as it increases slightly with higher humidity due to the lighter weight of water vapor molecules. The speed of sound in air can be measured in different units, but the most commonly used unit is meters per second
  • #1
leehana10
3
0
The speed of sound at 0°C in open air is 331.3 m/sec. At what temperature would the wavelength of a 440 Hz sound wave be 0.82 meters?

Equation to find the speed of sound: Vт = Vo √(T/273)

T = 273 + t(°C)

My calculations:

Vт = 440 Hz (0.82 m) = 360.8 m/s

Vт = Vo √(T/273)
360.8 m/s = 331.3 m/s (t^2)
-331.3 m/s = -331.3 m/s (t^2)
29.5 = t^2
√(29.5) = t
5.431 = t
 
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  • #2
360.8 m/s = 331.3 m/s (t^2)
-331.3 m/s = -331.3 m/s (t^2)

How did you get that?
 
  • #3
Nvm. I got help from a friend. Thank you for your help though!
 
  • #4
welcome!
 
  • #5


Based on my calculations, the temperature at which the wavelength of a 440 Hz sound wave would be 0.82 meters is approximately 5.4°C.

However, it is important to note that this calculation assumes ideal conditions and does not take into account factors such as air pressure and humidity, which can also affect the speed of sound. It is also important to consider the precision and accuracy of the given values for the speed of sound at 0°C and the frequency of the sound wave.

I would recommend conducting further research and experiments to verify the accuracy of this calculation and to account for any other variables that may affect the speed of sound in air. Additionally, it may be helpful to compare these results with known values and data from other sources to ensure consistency and validity.
 

1. What is the formula for calculating the speed of sound in air?

The formula for calculating the speed of sound in air is v = 331.4 + 0.6T, where v is the speed of sound in meters per second and T is the temperature in degrees Celsius.

2. How does air temperature affect the speed of sound?

Air temperature has a direct effect on the speed of sound. As the temperature of air increases, the speed of sound also increases. This is because warmer air molecules have higher kinetic energy and can vibrate faster, allowing sound waves to travel faster.

3. Is the speed of sound in air constant?

No, the speed of sound in air is not constant. It can vary depending on factors such as temperature, humidity, and altitude. However, at a given temperature and humidity level, the speed of sound can be considered relatively constant.

4. How does humidity affect the speed of sound in air?

Humidity has a small effect on the speed of sound in air. As humidity increases, the speed of sound also increases slightly. This is because water vapor molecules are lighter than air molecules and can slightly decrease the average mass of air, making it easier for sound waves to travel.

5. Can the speed of sound in air be measured in different units?

Yes, the speed of sound in air can be measured in different units such as meters per second, kilometers per hour, feet per second, and miles per hour. However, the most commonly used unit is meters per second.

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