Amplitude, Period, Frequency and Wavelength of Periodic Waves

[MrAdeshpal]

Very boooooooooooooo video! No information about sound waves,JUST A LECTURE OF AND OLD MAN,who lost his teeth!!

[rebecgood]

flag the video for spam

[fpuckk]

Dam u! U madaphuckin copycat!

[WHY70122]

You are a CUNT :| i feel sorry to say this word but... by the first glance, i could tell this is from Sal.

[sajidmahmud1]

you keep on saying "jerking it up and down"

[lychee159]

THIS IS KHAN'S VIDEO!! U SHUD BE BANNED!!!

[FurFeathersAndScales]

Maths about examples- lots of poeple serious about passing math dont just watch how one person does it they watch several but try and do the problem first then watch to see if they did it right. We need as many teachers making vids as possible

[themaxkozak]

Why are you copying khan academy's videos, they are already free

[Croyax111]

copycat faggot

[crazy4god456]

im in the navy and on lunch thanks for the help i have a test in hour lol