Find the temperature of air given frequency and wavelength?

Click For Summary
SUMMARY

The discussion focuses on calculating the temperature of air based on the frequency and wavelength of a sound wave. Given a frequency of 722 Hz and a wavelength of 0.54 m, the velocity of sound is calculated to be 389.88 m/s. The relationship between the velocity of sound and temperature is established using the formula V/Vo = √(T/To), where Vo is the velocity of sound at 0 degrees Celsius (327 m/s). This formula indicates that temperature must be measured on an absolute scale for accurate calculations.

PREREQUISITES
  • Understanding of sound wave properties, including frequency and wavelength
  • Familiarity with the formula for wave velocity: V = λ * frequency
  • Knowledge of the relationship between sound velocity and temperature in gases
  • Basic understanding of absolute temperature scales, such as Kelvin
NEXT STEPS
  • Research the derivation and application of the formula V/Vo = √(T/To)
  • Study the effects of temperature on sound velocity in different gases
  • Learn about the Kelvin scale and its importance in thermodynamics
  • Explore practical applications of sound wave properties in meteorology
USEFUL FOR

Students studying physics, particularly those focusing on acoustics and thermodynamics, as well as educators looking for practical examples of sound wave behavior in relation to temperature.

miamirulz29
Messages
62
Reaction score
0

Homework Statement


A sound wave has a frequency of 722 hz and a wavelength of .54 m. What is the temperature of the air? Assume the velocity of sound at 0 degrees Celsius is 327 m/s.


Homework Equations


V= lambda * frequency


The Attempt at a Solution


I have no idea what to from there? The velocity of the wave is 389.88 m/s. Thanks in advance.
 
Physics news on Phys.org
Can you find out the relation between temperature and the velocity of the sound in the air?
 
How do I know what the velocity of the sound in the air is?
 
miamirulz29 said:
How do I know what the velocity of the sound in the air is?
It is given. 327 m/s at zero degree Celsius.
 
So would you set up a proportion?

327/389=0/x

But you can't do that because x would be zero.
 
In this problem temperature must be in absolute scale.
So V/Vo = Sqrt(T/To)
 

Similar threads

  • · Replies 6 ·
Replies
6
Views
3K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
6K
  • · Replies 1 ·
Replies
1
Views
5K
  • · Replies 7 ·
Replies
7
Views
6K
Replies
1
Views
1K
  • · Replies 16 ·
Replies
16
Views
2K
Replies
5
Views
2K
Replies
4
Views
2K
  • · Replies 33 ·
2
Replies
33
Views
3K