i'm pretty sure that someone who's watching a video on Doppler's effect would have reached a level that they know that distance is velocity times time. thank you for still explaining every little thing.
@sameerahuja28537 жыл бұрын
Divyashakti Gupta tumhara toh iit pkka 😂
@rpw50837 жыл бұрын
actually the integral of velocity
@shakeelkhan92296 жыл бұрын
write it is a very good condition
@king-bg4rp2 күн бұрын
skibidi
@enverko7 жыл бұрын
Helped me get through mechanical waves, not just this video obviously! Thanks a lot!
@homestarhydon11 жыл бұрын
It's the same principle. Whether a car is moving towards you at 5 mph or you are moving towards the car at 5 mph is irrelevant, the waves act the same. So, if there is a problem where you are moving towards a stationary object at 5 mph, you can treat it as if the object is moving towards you at 5 mph as well. Or, (even though in relativity this isn't exactly the case) if you are moving towards something at 5 mph and it is moving towards you at 20 mph, you can treat it as if it's moving 25 mph
@ronycb7168 Жыл бұрын
The time period measured by the observer is the time taken between the first crest and second crest to reach the observer .. thanks, its an awsum derivation.
@Starher013 жыл бұрын
wow much better explanation than my teacher did thanks a lot
@EVismyname3213 жыл бұрын
You saved me from my Physics Periodic Test. TNX \m/
@sagarkp17355 жыл бұрын
muchas gracias Sr. Sal. Esta es la conferencia más detallada e inclusiva a la que he asistido sobre este tema ...
@ProductionsRnR13 жыл бұрын
@theonlymoak, In that case it will depend on whether the police and the car being chased are in motion or not. If the car being chased moves faster than the police, then we should take the case where the source is stationary and the observer is moving, in that case, the relative frequency of the pulse emitted will increase. With this, the police will be able to find the relative position of the thief(chased car) by finding the distance.
@MysticMD10 жыл бұрын
Perfect! Thanks a million
@SuperZkym12 жыл бұрын
A distance galaxy is moving away from us at a speed of 32,433,990 m/s. For hydrogen gas in this galaxy, calculate the wavelength (in nm) of the hydrogen alpha line as observed here on earth. Note: The wavelength emitted by hydrogen is measured in the first year physics lab (Expt. 24) to be 656.2 n
@vedareddy933010 жыл бұрын
Brilliant. Thanks so much!
@ugursoydan81874 жыл бұрын
thank you very much. you told very understandable
@studentyo30776 жыл бұрын
best video on this so far
@DavidJohnson-en9om5 жыл бұрын
Thank you so much.. you cleared my confusions and doubts...
@Ihatenicknames113 жыл бұрын
Thank you so much :D this makes no sense in my textbook haha , but now I get it
@umapatki40688 жыл бұрын
thank you so much
@corymorrison199314 жыл бұрын
Great video!
@ronycb7168 Жыл бұрын
So the velocity of the wave does not change wrt stationary observer when the source moves..
@saumysharan26036 жыл бұрын
thank u for solving my problem!!!!!!!
@the_sophile5 жыл бұрын
Thanks a lot!
@Sebastian-vj7mw2 жыл бұрын
Pleas help me out: Why don‘t you add the velocity of the source to the velocity of the wave when you calculate T_0? (Is it because the observer is not moving in the medium and the wave velocity is given by the medium, but then this is just true for waves in a medium with the observer resting in it?)
@TheOnlyMoak13 жыл бұрын
so i have a question, hopefully someone can answer it. when police use radar guns they are applying the doppler effect. so when the wave hits the car what exactly happens to it? does it now take on the velocity of the car? without changing the velocity of the wave?
@jackz53507 жыл бұрын
Hey KA! I was using your iOS app to watch Doppler Effect videos, and I noticed that this video is missing from the playlist. It provides a bit of a logical gap, so it'd be helpful to update the app (and maybe even the website if it's missing from there too).
@PorkusSwordius13 жыл бұрын
great video. what software are you using to make it?
@king-bg4rp2 күн бұрын
OneNote, sorry for late reply xD, i was only 2y/o when u commented this.
@dhirajkhanal536411 жыл бұрын
Thumbs up!!
@hamidaalmusallami80545 жыл бұрын
Is education everything?
@upsteer111 жыл бұрын
Salute Sir !!
@alext90677 жыл бұрын
A light source is moving but the light is stationary. It's stationary because every wave generated radiates from the point in space where the light source is or was when the wave was generated. That wave widens thru space and it's center point is fixed. What is it fixed to? It's fixed to that universal coordinate system that is not supposed to exist. If this were not the case, Doppler shifting would not occur. Read more
@madhusoodanshukla42776 жыл бұрын
Who are you where do you work
@kyubey842211 жыл бұрын
Argh relying on Khan academy will make me fail my calculus physics class. Can't he do more difficult problems...
@muhammedtai62827 жыл бұрын
Kyubey btw, this is for AP physics 1, which is an algebra based course for highschool students ... so it makes sense that he's doing an easy problem.
@moonlight-lq1hy4 жыл бұрын
Did u fail or did u pass?
@ProductionsRnR13 жыл бұрын
Sorry. The relative frequency will decrease :p
@VexxumGaming1710 жыл бұрын
l
@Taylory00007 жыл бұрын
I know he made this organization, but Sal is my least favorite person in these videos
@ibrahimsaeed36776 жыл бұрын
😡
@Anas-nu7io6 жыл бұрын
mmmmmminus
@TrickshotAgario9 жыл бұрын
who else has an agar.io tab open?!
@sanskartewatia43207 жыл бұрын
why did you mention it mate? just wasted 40 minutes of my life...
@gauravkamat4206 жыл бұрын
🙄 Study Dude😭
@ultimatepirate95898 жыл бұрын
khan academy > physics book physics books should just be burnt because they are no longer very helpful
@devindrarambo32937 жыл бұрын
well technically is like he almost read every physics book and summarize it to give ya'll so you should be thankful for it :D