# energy transfer in waves URGENT HELP PLSSS!!!!!!!Watch

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#1
can anyone explain to me why is it that stationary waves do not transfer energy and why progressive waves do?
0
4 weeks ago
#2
(Original post by j.1.2)
can anyone explain to me why is it that stationary waves do not transfer energy and why progressive waves do?
If you picture a wave sent a long a string, the wave that you create at the start of the string will be transferred to the end of the string, and so energy has been transferred.
In a stationary wave the only movement of the string would be in between the nodes as the nodes are stationary points on the wave, and so the energy is stored in pockets between adjacent antinodes and there is not net transfer of energy.
0
#3
(Original post by hannah312)
If you picture a wave sent a long a string, the wave that you create at the start of the string will be transferred to the end of the string, and so energy has been transferred.
In a stationary wave the only movement of the string would be in between the nodes as the nodes are stationary points on the wave, and so the energy is stored in pockets between adjacent antinodes and there is not net transfer of energy.
is that it...
I thiught it was because, the two progressive waves forming the stationary waves have equal and opposite amounts of energy which has a cancelling effect when these meet.
so there's no net energy transfer.
0
4 weeks ago
#4
Yes that is essentially the same idea - the energy cancels at the nodes but there is still energy between the nodes.
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