# Power of wave on string

1. Dec 10, 2016

### ChloeYip

1. The problem statement, all variables and given/known data
http://i.imgur.com/sWZS9vQ.png

2. Relevant equations
P=½ √μF ω2 A2

3. The attempt at a solution
How is the equation related to the wavelength?
Thanks

2. Dec 10, 2016

### haruspex

Your relevant equation has frequency in it. What connects that with wavelength?

3. Dec 10, 2016

### ChloeYip

Where is frequency in the equation?
the F in the equation isn't meaning force (i.e. tension)?

4. Dec 10, 2016

### haruspex

5. Dec 10, 2016

### ChloeYip

well, i think w is directly proportional to frequency from this web, leading the answer b, right?

frankly, i just copy the equation from my textbook "university physics" of Young & Freedman
every symbol means the same to the website other than F is missing in the website.
does it mean anything for the difference?
thanks

6. Dec 10, 2016

### haruspex

Since wave velocity is √(tension/linear density), the two equations are the same.
ω is the angular frequency, i.e. in radians/time, rather than in oscillations/time.

7. Dec 10, 2016

### ChloeYip

what i mean is w = 2 pi f
thanks for telling me this new thing :)

8. Dec 10, 2016