Recent content by kmoukiss

Hi everyone ! I am doing a report of some papers on extrasolar planets and I would like to clarify some points! 1) What is the difference between oberving in the IR at 4microns or 24microns ? what do you get in difference in observation ? 2)how can a measure of flux decrement can affect...

But so Lambda stay the same... but varying the coefficient, leads to vary the L, right ?

The lambda is given... ? you mean one "full" circle = lambda/2 ...?

So those means that there are several "L" for which there is a standing waves... I thought I had to use formulas... :( It would be more simple for me i think but I have understood the procedure thanks to you!

So the first three harmonics are the first, the third and the fifth (odd numbers). And so the first lambda is = 4L The third to 5/3*L The fith to 4/5*L Right ? :s

I have drawn the first 3 ... but why do I need to draw them ? :$

Thank you. But I need to don't randomly draw thoses sketchs right ? How do I do ? :( I really don't understand the point... (NOT your fault at all! just mine !)

But do I work out the wavelength of this sound using lamda=f*v . I guess yes. And then I use this wavelength in lamda=4L/n? I mean, how do i use the wavelength then ? I need to find several lenghts no ? Thank you so much.

Yes that is exactly what i thought! so the "demonstration" I have made above, is it correct ? I mean can i first calculate the fundamental frequency as i did to r-plug it into the final formula ? Thank you!

Homework Statement A 1.0m long vertical tube is filled with water. A tuning fork vibrating at 580Hz is held over the open top of the tube as the water is slowly drained from the bottom. At what water heights, measured from the bottom of the tube, will there be a standing wave in the tube...