Friday

January 30, 2015

January 30, 2015

Posted by **guli** on Thursday, January 14, 2010 at 3:49pm.

a) what is the wavelength of the sound the whisle emits?

b)calculat the speed of sound relative to the observer on the bus when the truck is 1)approching the truck and 2)when the moving away from the truck.

c) calculate the frequency of the sound heard by the observer in b-1 and b-2.

- physics -
**drwls**, Thursday, January 14, 2010 at 4:24pma) wavelength = (sound speed)/(frequency) = 1.308 m

b1) 340+30 m/s = ___

b2) 340-30 m/s = ___

c1) Doppler-shifted frequency

= relative speed of sound/(wavelength)

= 370/1.308 = ___ Hz

c2) 310/1.308 = ___ Hz

**Answer this Question**

**Related Questions**

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 - A car traveling at 22.1 m/s honks its horn as it directly approaches ...

physics - A car traveling at 24.3 m/s honks its horn as it directly approaches ...

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

physics - A train moving at a constant speed is passing a stationary observer ...

physics - A train moving at a constant speed is passing a stationary observer ...

physics - A train at rest emits a sound at a frequency of 1089 Hz. An observer ...

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

Physics--please help!! - A student in a parked car honks the horn, which has a `...