# Physics waves multiple choice questions help please

Watch
Announcements
Thread starter 3 months ago
#1
I'm not too sure why B is not the answer, because I thought that the particle velocity at P would be the highest, not at Q, so it's wrong.But apparently D is wrong. So I guess I have to questions: why is it D and why is it not B.

Thanks sooo much
0
reply
3 months ago
#2
(Original post by vix.xvi)
I'm not too sure why B is not the answer, because I thought that the particle velocity at P would be the highest, not at Q, so it's wrong.But apparently D is wrong. So I guess I have to questions: why is it D and why is it not B.

Thanks sooo much
In regard to a particle at P, ask yourself what is the particle doing at P. If the particle is moving at maximum velocity at P, what is the direction of motion?

Don’t really understand what you are trying to ask in the following quote:
(Original post by vix.xvi)
So I guess I have to questions: why is it D and why is it not B.
This is a progressive wave, so particles within one wavelength cannot be in phase. They are moving at different velocity.
0
reply
Thread starter 3 months ago
#3
(Original post by Eimmanuel)
In regard to a particle at P, ask yourself what is the particle doing at P. If the particle is moving at maximum velocity at P, what is the direction of motion?

Don’t really understand what you are trying to ask in the following quote:

This is a progressive wave, so particles within one wavelength cannot be in phase. They are moving at different velocity.
Ahh i get the second bit. Sorry but where exactly is the velocity/ KE of the particles highest in a wave?

Tysm xx
0
reply
3 months ago
#4
(Original post by vix.xvi)
Ahh i get the second bit. Sorry but where exactly is the velocity/ KE of the particles highest in a wave?

Tysm xx
Have you studied simple harmonic motion?
0
reply
Thread starter 3 months ago
#5
(Original post by Eimmanuel)
Have you studied simple harmonic motion?
nope x
0
reply
3 months ago
#6
(Original post by vix.xvi)
nope x
Highly recommend that you take a look at it first.
https://courses.lumenlearning.com/ph...riodic-motion/
http://hyperphysics.phy-astr.gsu.edu/hbase/shm.html

The particles in a wave are modelled to undergo simple harmonic motion to produce transverse or longitudinal wave motion.

Note that the particle at P will move down from the maximum displacement, so the particle is making a U-turn. It makes no sense that the particles at P can have maximum speed.
0
reply
X

Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### Poll

Join the discussion

#### What factors affect your mental health the most right now?

Anxiousness about lockdown easing (111)
5.01%
Uncertainty around my education (332)
14.99%
Uncertainty around my future career prospects (240)
10.84%
Lack of purpose or motivation (307)
13.86%
Lack of support system (eg. teachers, counsellors, delays in care) (102)
4.6%
Impact of lockdown on physical health (128)
5.78%
Loneliness (192)
8.67%
Financial worries (86)
3.88%
Concern about myself or my loves ones getting/having been ill (93)
4.2%
Exposure to negative news/social media (104)
4.7%
Lack of real life entertainment (118)
5.33%
Lack of confidence in making big life decisions (193)
8.71%
Worry about missed opportunities during the pandemic (209)
9.44%

View All
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.