Sound Waves, Intensity level, Decibels, Beat Frequency, Doppler Effect, Open Organ Pipe - Physics

[@TheOrganicChemistryTutor]

Full 77 Minute Video - Doppler Effect: www.patreon.com/MathScienceTutor Direct Link to The Full Video on Patreon: bit.ly/2YCGmlT PDF Worksheet - 10 Practice Problems: bit.ly/3X9Ntel More Physics PDF Worksheets: www.video-tutor.net/physics-basic-introduction.html

[@RaymondKikomeko]

I appreciate your work JG

[@miliboy3077]

00:22:19 Intensity 00:26:50 Intensity level/Decibels 00:57:11 Traveling sound waves 01:15:25 Standing waves 01:45:03 Pipe Organs 02:23:27 Interference 02:37:21 Doppler Effect

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[@VikingCanadian]

@felix john probably too late but 2:33:29 talks a bit about beat frequency

[@chherryflavored]

thank you!!

[@ayushshah2103]

thanks man

[@TheOrganicChemistryTutor]

I meant to say that a wave on a string is a transverse wave and not a longitudinal wave.

[@Skippo_thecat7]

I just replayed the video because of this.I thought i have heard wrong so came to comments 😁

[@ICT_Grad]

Greetings man,keep up the Good work

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The video was made about 4 years ago in 2016, how did you receive this great revelation in 2019 that you meant to say that a wave on a string is a transverse wave and not a longitudinal wave 😂😂😂

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same man

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My physics teacher gave herself a single 1 hour 15 minute lecture period for this entire chapter. I wish I was kidding

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[@TheOrganicChemistryTutor]

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[@kworx1]

As a audiophile, I am finding this to be one of the best presentations, I have found, on the science of sound waves. I am just watching it for the first time, but this will become my study guide for tuning my listening room. Thank you for posting this video!

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[@electropocalypse5877]

I've been infatuated with digital music for a while yet the further down the rabbit hole I go the more I find references to mathematical formulas. This stuff is fascinating yet overwhelming and (in my case) it's not practical to learn in great depth in order to become a good musician and sound engineer. That said, the general idea presented in this video was extremely helpful. Thank you for filling in so many gaps and educating people on this compelling topic. Though I know very little I am very inspired by this quote: _"If you want to find the secrets of the universe, think in terms of energy, frequency and vibration."_ - Nikola Tesla A little off topic, I've also taken some interest in the _law of vibration._ The way cells are composed of protons, neutrons and electrons vibrating in a synchronized dance is truly amazing and it's the speed of these vibrations that determines whether something is a solid, liquid or gas. When we consider that all sound is vibration it truly gives credence to things like talking to plants and sound/vibrational healing in my view.

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[@davorpantelic9609]

Here is one helpful tip: 39:33 . When you calculating distance , you can calculate first what intensity will be for 1m with 1m you can easily calculate what intensity will be for 5m , 1.3m . For example intensity of sound from 2 meters is 100w/m2 , following this formula X/4=100 , since it is 2m distance we convert 2 , into 2 squared and that is =4. Then you multiply 100*4=400 W/m2 ,and you have intensity from 1m .Then you do similiar thing with 1.3m distance , 5m distance .For 5m you first calculate the square of 5 which is 25 ,then you divide 1m distance (400) with 25 ,and you get correct answer 400/25=16 , 16W/m2 .Same thing with 1.3m, 400/1,69=236 , 236W/m2.

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[@imMortAlDA2]

DOPPLERS EFFECT For determining the sign of velocity of souce and observer use this trick: 1.Check the direction of the Sound produced and the [Source or Observer]. 2.If they are opposite in direction use (+) sign. 3.If they are same in direction use (-) sign.

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[@astaghfirullah10000]

52:13 Firstly , I converted the dB to w/m2 then I found the power at 12m ,next up I divided that power by (4π(150)2) , the result I got is the intensity in terms of W/m2 so I’ve converted it into dBs !

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[@davorpantelic9609]

46:18 You can also instead of direct calculation by level of intensity, you can also convert level of intensity to intensity then calculate the distance (150m). When you calculate the distance , Then you convert to level of intensity . IDK maybe this method is simpler for someone.

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He probably flunked u cant memorise all this stuff in 2 hours

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[@TheOrganicChemistryTutor]

Anytime

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[@poisonslave2711]

About Doppler effect: How is it possible an fs to be lower than an fo? As the source approaches to the observer the fo approaches the fs and fo

[@poisonslave2711]

Also I see that we don't use the distance in this formula. Wouldn't the frequency be different for an observer in 5 meters an for an observer in 15?

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At 41:30 you multiplied top and bottom by R1 and still had the R1 in the denominator after multiplication

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Where did you get that velocity for sound through Helium? Is there an equation for that, or is it consulted from a table? 2:08:34

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[@TheOrganicChemistryTutor]

I guess I have to work on that

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[@sahil1053]

What is the intensity of loud speaker or a buffer.

[@avranckneupane6717]

did you figure it out yet

[@habibuhadiabubakar5390]

Thanks. Super helpful

[@angelatabi1215]

Please can u do a video on sound wave explaining every formula step by step like how it was derived and then give questions to a particular formula but please in this video I only see different questions with formulas without knowing how it was derived and how I will apply them random,I'm confused pls

[@SM-vo5gj]

At 13 seconds I believe he says that a wave on a string forms a longitudinal wave, an obvious mistake... just pointing it out so it doesn't confuse anyone.

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i am afraid organic chem tutuor never makes mistakes. u pointing out his mistakes is the biggest mistake

[@husseinjaber1849]

Emission and reception of sound waves