Question

I have a small confusion regarding STANDING WAVES!
we know that nodes are the point of minimum vibration but I have this book which says that for LONGITUDINAL standing waves, pressure and density variations are maximum at nodes and thus vibration is maximum at nodes. Can you explain me how?

Answer 1

@Michele_Laino @IrishBoy123

Answer 2

@Photon336

Answer 3

@Kainui

Answer 4

@Abhisar i know where you stuck

Answer 5

there are two types of waves in standing waves
1) displacement wave ( or transverse waves)
2) longitudinal wave

Answer 6

i hope you know the difference between these two ^^

Answer 7

okay

Answer 8

Yes, I know that. I want to know why vibrations are minimum at nodes in longitudinal Standing waves while the same is opposite for transverse standing waves.

Answer 9

in displacement wave, amplitude is minimum at nodes . thereby, vibration is minimum and vice-versa for antinode

Answer 10

but in case of standing wave, whole process is reversed

Answer 11

Yes i know....but why it is opposite for longitudinal waves. Why pressure variation is maximum at nodes of longitudinal standing waves?

Answer 12

http://hyperphysics.phy-astr.gsu.edu/hbase/waves/standw.html

Answer 13

Yes I was reading that link.

Answer 14

\[\large \bf A~Node~for~Displacement~is~Antinode~for~pressure\]

Answer 15

It's not that amplitude is max at nodes. Amplitude or displacement is always minimum at nodes. But pressure becomes max at nodes in longitudinal waves. So vibration is still least at node for both but pressure variation is max at nodes for longitudinal waves.

Answer 16

As i stated earlier,
A NODE FOR DISPLACEMENT IS ANTINODE FOR PRESSURE

Answer 17

Yes, I just wanted to understand why?
thanx c:

Answer 18

I have not much knowledge about standing wave !
I have a basic understanding which i have shared to you :)

Answer 19

It is being taught in COLLEGES !

Answer 20

in advanced

Answer 21

Well, I need to teach this to my younger brother and I find it hard to teach unless I know it well. What will I do if he asked me the same question :O :O

Answer 22

Simply say you are going to teach in your college life !
Be prepare for that !
Everything is not taught for you

Answer 23

Ehhhh..that is the answer I hate the most myself :D
But I gues it's the right answer .. :D

Answer 24

Thanks for the help bro!! :3

Answer 25

hey, that's why we created level
Grade 5 student can't learn Grade 12 !

Answer 26

Hey, i am sorry !
I don't help you out :(

Answer 27

I haven't revise this chapter yet !

Answer 28

OR i can recommend you refer HCV