Register to reply 
Energy carried by a wave 
Share this thread: 
#1
Mar909, 02:45 PM

P: 3

Hi all,
In all books I looked it is written that energy carried by a wave is proportional to its amplitudes square i.e. E[tex]\propto[/tex]A^{2}, if wave equation is f(x)=Asin(wx) but what is the exact equation? Also if we define the wave with fourier series f(x)=[tex]\sum[/tex]Acos(nx)+Bcos(nx) what would be the energy carried by this wave? 


#2
Mar909, 02:56 PM

P: 110

[tex]E=k\sum{(A^2+B^2)}[/tex] if k is independent of frequency. Otherwise [tex]E=\sum{k(A^2+B^2)}[/tex] 


#3
Mar1009, 07:35 PM

P: 1

this is a little off topic, but i'm doing a project and i need to know some infrastructure issues with tidal wave energy generation, and i don't know of any, help please?



#4
Mar1009, 07:57 PM

Mentor
P: 41,351

Energy carried by a wave
Look at the various proposals for (and some actual installed) wave power extraction facilities, and think about those issues I mentioned above... 


Register to reply 
Related Discussions  
Energy carried by Electromagnetic Waves  Introductory Physics Homework  1  
Energy carried by the bulk motion of matter  Astronomy & Astrophysics  2  
Energy carried by an EM wave  Introductory Physics Homework  2  
Energy Carried by Electromagnetic Waves why is it wrong?  Introductory Physics Homework  4  
Energy carried by an EM wave  Introductory Physics Homework  3 