(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A tuning fork is in a hall 47.0 m long, and is placed 14.0 m from one end. It generates a tone of 246Hz. What is the phase difference when the waves traveling in each direction bounce back and meet each other?

2. Relevant equations

Calculated wavelength with 343/246. Also tried 2pi*38m/1.39m = phi. Also maybe (cos phi/2)sin(kx-omega*t+phi/2)

3. The attempt at a solution

Well, I figured that I could make it simple, calculate the wavelength, divide the difference in distance traveled by wavelengths, getting 27.4 waves, and then multiply .4 * 360 to get things into degrees. This gives me 144 degrees, but the answer in the back of the book is 91.3 degrees. What am I doing wrong?

Thanks in advance.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Finding phase difference based on distance

**Physics Forums | Science Articles, Homework Help, Discussion**