Physics Problem (with frequency)

In summary, a sound wave with a frequency of 700 Hz and a wavelength of 0.50m has a speed of sound in air that can be calculated using the formula v = 331 m/s + 0.6T, where T is the temperature in degrees Celsius. This allows you to find the temperature of the air given the other variables.
  • #1
Drey0287
7
0
A sound wave has a frequency of 700 Hz in air and a wavelength of .50m. What is the temperature of the air?

speed of sound in air = 345 m/s.


I don't even get how to go about this problem...i don't know the equation
 
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  • #2
I believe the mistake you made was to assume that the spped of sound in air is 345 m/s. You can tell just based on the information you are given in the question. If the frequency is 700 Hz and the wavelength is 0.5 m, then what MUST the speed of sound be?

There is actually a formula that relates speed of sound in air with temperature. Find that and you shall find the answer you desire.
 
  • #3
Yupp, remember when the air molecules are heated up, it moves faster.
 
  • #4
[tex]v\approx 331\mbox{m/s}+0.6\mbox{T}[/tex]

where [itex]v[/itex] is the speed of sound in air, and [itex]\mbox{T}[/itex] is the temperature in degrees Celsius.
 

What is a Physics Problem?

A physics problem is a question or scenario that requires the use of scientific principles and mathematical equations to find a solution. It typically involves real-world situations and phenomena, and can range from simple calculations to complex theories.

How do I approach solving a Physics Problem?

There are several steps you can follow to solve a physics problem: 1) Identify the known and unknown variables, 2) Draw a diagram to visualize the problem, 3) Choose an appropriate equation(s) to use, 4) Substitute the known values into the equation(s), and 5) Solve for the unknown variable. It may also be helpful to double check your answer and units for accuracy.

What are some common mistakes to avoid when solving a Physics Problem?

Some common mistakes to avoid when solving a physics problem include: not clearly defining the known and unknown variables, using the wrong equation(s), forgetting to convert units, and making calculation errors. It is important to carefully read and understand the problem, and to check your work for accuracy.

How does Physics relate to other branches of science?

Physics is often referred to as the "fundamental science" because it provides the foundation for other branches of science such as chemistry, biology, and geology. Many scientific principles and laws in these fields are based on the laws of physics.

What are some real-world applications of Physics?

Physics has countless real-world applications, including but not limited to: understanding and predicting the behavior of matter and energy, designing and improving technology and machinery, studying the universe and its phenomena, and developing new materials and processes. It plays a crucial role in almost every aspect of our daily lives.

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