Astationary bagpiper is playing a highland bagpipe, in which one reed produces a continuous sound of frequency 440 hz. the air is still and the speed of sound is 340 m/s. a) what is the wavelength of the sound wave produced by the bagpipe? b)what is the frequency of the sound wave that a bicyclist hears if she is approaching the bagpiper at 10.0 m/s? c)what is the wavelength of the sound wave that a bicyclist hears if she is approaching the bagpiper at 10.0 m/s? d)what is the frequency of the sound wave that a bicyclist hears if she is moving away from the bagpiper at 10.0 m/s? e)what is the wavelength of the sound wave that a bicyclist hears if she is moving away from the bagpiper at 10.0 m/s?

(A) 0.773 m

(B) f' = 452.94 Hz

(C)

(D) f" = 427.058 Hz

(E)

Solution:

As per the question:

Frequency of the sound produced, f = 440 Hz

Speed of the sound in still air, v = 340 m/s

Now,

(A) To calculate the wavelength of the sound wave:

We use the relation:

(B) By using Doppler effect to calculate the frequency of the sound wave:

Velocity of the receiver,

Velocity of the source,

When the receiver is approaching:

f' = 452.94 Hz

(C) To calculate the wavelength of the sound wave:

(D) While moving away, the frequency of the sound wave can be calculated as:

f" = 427.058 Hz

(E) The wavelength can be given by:

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles