Try the fastest way to create flashcards
Question

# A sound source plays middle C (262 Hz). How fast would the source have to go to raise the pitch to C sharp (271 Hz)? Use 343 m/s as the speed of sound.

Solutions

Verified
Step 1
1 of 4

This is a basic problem in which we use Doppler effect equation. Keep in mind that the stationary is detector and source is in motion. Which means that the $v_{d}=0$. Let's write the equation for Doppler effect:

$f_{d}=f_{s}\cdot \frac{(v-v_{d})}{(v-v_{s})}\tag1$

Where the $v$ is the speed of sound. In this problem $f_{d}$ is frequency of C sharp, while $f_{s}$ is the frequency of middle C.

## Recommended textbook solutions #### Physics: Principles and Problems

9th EditionISBN: 9780078458132Elliott, Haase, Harper, Herzog, Margaret Zorn, Nelson, Schuler, Zitzewitz
3,068 solutions #### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

4th EditionISBN: 9780133942651 (8 more)Randall D. Knight
3,508 solutions #### Mathematical Methods in the Physical Sciences

3rd EditionISBN: 9780471198260 (1 more)Mary L. Boas
3,355 solutions #### Fundamentals of Physics

10th EditionISBN: 9781118230718 (3 more)David Halliday, Jearl Walker, Robert Resnick
8,971 solutions