Hello everyone! I'm having troubles understanding why i'm not getting this right...the problem is:(adsbygoogle = window.adsbygoogle || []).push({});

A sinusoidal wave is traveling on a string with speed 10. cm/s. The displacement of the particles of the string at x = 25 cm is found to vary with time according to the equation y = (5.0 cm) sin[10.0 - (4.0 s-1)t]. The linear density of the string is 3.0 g/cm.

What is the frequency of the wave?

Well wouldn't just be 4.0 s^-1?

Also it says What is the wavelength of the wave?

I t hought it would be:

You know the wave number is: (5.0 cm) and you know the relationship:

Wave Length = 2PI/k, where k is the wave number: so i put:

Wave Length = 2PI/5 = 1.2566 which was wrong any ideas why i'm not getting these right?

THanks!

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# Homework Help: Wave equation confusion!

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