Speed of Sound in Air - A Level Physics Core Practical Revision

How to calculate speed of sound in air using a signal generator, loud speaker, oscilloscope and microphone. Using the wave speed equation to calculate speed by measuring frequency and wavelength.

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[asnowcrash]

gary's expression is one of apathy and indifference

[sunnykim]

Plz do more core practicals...it's very helpful

[Henbush]

This is on the exam tomorrow according to the advance info... here we go!

[Alfster]

Good video and very helpful - thanks. Small thing to mention (because it is important at A-Level) the calculated wavelength should only be reported to 2 s.f not 5 s.f. You can only be as accurate as the smallest number of s.f. used in the calculation.

[KitBetts-Masters]

Grab my new book to help you get ready for studying A Level Physics and to prepare for the exams:

[hoppalahestele]

thank you very much! keep up with these informative videos. this will do so much good for me in my upcoming exam

[sunnykim]

Could u do another experiment with two microphones together?

[Aliya_Academy]

Hi, Can you tell me what is the Brand of the speakers you used in the video?

[oblivious]

Just learnt about uncertainties - so would the uncertainty for your wavelengths be: 29.475 ± 7.29%.
The speed of sound uncertainty would then be 368 ± 7.29%. or 368 ± 26.9.

The method I did for uncertainty = mean± (range/2)
The method I did for percentage uncertainty = uncertainty / mean *100

Is my method correct?

[mr.batman]

Are there any theoretical values or the only thing you can do is find the experimental values? I need the theoretical ones if there are any please.

[savivinu]

May i know how did you calculate the individual lambda values from the distance (x) values? Thank you. :)

[lakshayveer]

I am doing my physics practical with a similar set up but i am measuring the speed of sound in different temperatures
do you have any advice on that?
the videos really good!

[amir.k]

I dont understand how you found the frequency just by looking at the oscilloscope. Could you please explain it me?

[danielnutt]

How would repeating the experiment at different frequencies improve the accuracy?

[journeywithriya]

why there is an apparent change in the amplitude when you move the microphone back and fro?

[roxannefoote]

how did you calculate the wavelengths in the table. i can't seem to get the same answers

[fayzaazminishra]

Sir, how did you get the wavelength values from the distance values?

[nightquake]

What’s interfering with what please explain

[dannotbilzerian]

Sir, please tell me how you connected the mic to your scope?

[sanaiqbal]

what frequency is the signal generator set to?