Sunday

February 1, 2015

February 1, 2015

Posted by **sophie** on Saturday, April 4, 2009 at 8:00pm.

A. 42.2 Hz

B. 54.5 Hz

C. 61.8 Hz

D. 65.4 Hz

I used the Dopler effect formula and got B?

- Physics!! -
**drwls**, Saturday, April 4, 2009 at 8:13pmThe shift in frequency is, for slow speeds compared to the speed of sound, f*(V/a) = 583*(16/343) = 27.2 Hz , up or down. a is the speed of sound

Double that for the difference between the upshifted and the downshifted frequencies and you get 54.4 Hz

The correct answer is B. Good work.

The exact equation, which I am too lazy to look up, would probably give you 54.5 Hz

- Physics!! -
**sophie**, Saturday, April 4, 2009 at 8:19pmthanks!

**Answer this Question**

**Related Questions**

DrBob222 - A car moving at 16.0 m/s, passes an observer while its horn is ...

physics - 1)As a sound source moves away from a stationary observer, the number ...

physics - 1)As a sound source moves away from a stationary observer, the number ...

physics - 1)As a sound source moves away from a stationary observer, the number ...

Physics Help ASAP - A car horn is pitched at 520 Hz. The car travels along a ...

physics..please help? - At rest, a car’s horn sound at the note A(440Hz) The ...

physics - a car sounds its horn as it travels at a steady speed of 15m/s along a...

physics - a car, moving at 100 mi/hr, passes a stationary police car whose siren...

Physics - A train sounds its horn as it approaches an intersection. The horn can...

Physics - A car sounding its horn (rated by the manufacturer at 600 Hz) is ...