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#2
Infact, i might be able to 
The nodes are the points on the wave with the least amplitude. This means they have the least displacement and therefore they have the least energy.
On the other hand, anti nodes have the most amplitude, and therefore carry the most energy
The nodes are the points on the wave with the least amplitude. This means they have the least displacement and therefore they have the least energy.
On the other hand, anti nodes have the most amplitude, and therefore carry the most energy
Spoiler: ![Image]()
This shows the nodes and antinodes on the wave, the nodes always have the least amplitude (usually 0) and therefore have no movement, no movement is no kinetic energy etc.
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(Original post by The-Spartan)
Infact, i might be able to
The nodes are the points on the wave with the least amplitude. This means they have the least displacement and therefore they have the least energy.
On the other hand, anti nodes have the most amplitude, and therefore carry the most amplitude
Infact, i might be able to
The nodes are the points on the wave with the least amplitude. This means they have the least displacement and therefore they have the least energy.
On the other hand, anti nodes have the most amplitude, and therefore carry the most amplitude
Spoiler: ![Image]()
This shows the nodes and antinodes on the wave, the nodes always have the least amplitude (usually 0) and therefore have no movement, no movement is no kinetic energy etc.
Show
is there an equation which explains this?
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#4
(Original post by thefatone)
where does this come from? i understand the least displacement and amplitude but i don't see where energy comes into this.
is there an equation which explains this?
where does this come from? i understand the least displacement and amplitude but i don't see where energy comes into this.
is there an equation which explains this?
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(Original post by samb1234)
Ke=1/2 mv^2. Therefore if the rope isn't moving (which is the case of a node) the kinetic energy of the wave at that point is 0 as the velocity is 0
Ke=1/2 mv^2. Therefore if the rope isn't moving (which is the case of a node) the kinetic energy of the wave at that point is 0 as the velocity is 0
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(Original post by samb1234)
Yes
Yes
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#8
(Original post by thefatone)
how???? i understand the particle nature of the em spectrum as demonstrated by the photoelectric effect but how to waves transfer energy?
how???? i understand the particle nature of the em spectrum as demonstrated by the photoelectric effect but how to waves transfer energy?
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#9
(Original post by thefatone)
how???? i understand the particle nature of the em spectrum as demonstrated by the photoelectric effect but how to waves transfer energy?
how???? i understand the particle nature of the em spectrum as demonstrated by the photoelectric effect but how to waves transfer energy?
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(Original post by samb1234)
Well the string is moving right? therefore if it is moving it must have a kinetic energy. The derivation of the exact energy of a wave goes way beyond this level
Well the string is moving right? therefore if it is moving it must have a kinetic energy. The derivation of the exact energy of a wave goes way beyond this level
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#11
(Original post by thefatone)
the string is a materialistic thing whereas a wave is not
the string is a materialistic thing whereas a wave is not
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#12
(Original post by thefatone)
the string is a materialistic thing whereas a wave is not
the string is a materialistic thing whereas a wave is not
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(Original post by Vikingninja)
Certain waves involve displacing matter. E.g. a wave in water, the water has energy from this wave like motion. In the circumstance of a wave in water the higher the displacement then the more EK there is.
Certain waves involve displacing matter. E.g. a wave in water, the water has energy from this wave like motion. In the circumstance of a wave in water the higher the displacement then the more EK there is.
(Original post by samb1234)
The wave is travelling through the string
The wave is travelling through the string
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#14
(Original post by thefatone)
I see so the waves transfer energy by displacing other stuff? so would those be classed as mechanical/longitudinal waves?
yes thus the wave isn't materialistic, yes it acts through the string
I see so the waves transfer energy by displacing other stuff? so would those be classed as mechanical/longitudinal waves?
yes thus the wave isn't materialistic, yes it acts through the string
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#15
(Original post by Vikingninja)
A mechanical wave is where matter is oscillating so yes, a EM wave wouldn't be this. Mechanical waves can be transverse or longitudinal. Example of transverse is a water ripple/wave and a longitudinal one would be a sound wave. A sound wave works by knocking particles into each other and transferring their EK.
A mechanical wave is where matter is oscillating so yes, a EM wave wouldn't be this. Mechanical waves can be transverse or longitudinal. Example of transverse is a water ripple/wave and a longitudinal one would be a sound wave. A sound wave works by knocking particles into each other and transferring their EK.
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(Original post by Vikingninja)
A mechanical wave is where matter is oscillating so yes, a EM wave wouldn't be this. Mechanical waves can be transverse or longitudinal. Example of transverse is a water ripple/wave and a longitudinal one would be a sound wave. A sound wave works by knocking particles into each other and transferring their EK.
A mechanical wave is where matter is oscillating so yes, a EM wave wouldn't be this. Mechanical waves can be transverse or longitudinal. Example of transverse is a water ripple/wave and a longitudinal one would be a sound wave. A sound wave works by knocking particles into each other and transferring their EK.
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#17
(Original post by thefatone)
i guess what i'm really asking is how this happens... which is probably way beyond my level. ;(
i guess what i'm really asking is how this happens... which is probably way beyond my level. ;(
In a collision between two particles, EK is transferred.
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(Original post by Vikingninja)
This gif shows how they knock into each other and rebound.
![Image]()
In a collision between two particles, EK is transferred.
This gif shows how they knock into each other and rebound.
In a collision between two particles, EK is transferred.
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