Homework Help: physics

Posted by ashu on Sunday, June 17, 2012 at 5:38am.

to an observer the pitch of the stationary source of the sound appears to be reduced by 20% if speed of sound is 340m/s then sped and direction of 5he observer is
options
1.68 m/s away from the observer
2.96 m/s away from the observer

physics - Elena, Sunday, June 17, 2012 at 5:46pm
{f(observed) - f(source)}/f(observed) = 20/100, u = 340 m/s
At source approaching
f(observed) = [v/(v-u)] •f(source),
v =[f(obs)-f(sour)] •u/ f(obs) = 20% •340/100%= 68 m/s.

Answer this Question

Related Questions

physics - a source of sound id traveling towards a stationary observer .The ...
physics - An observer detects an apparent frequency of 505 hz coming from a 500 ...
phys - An observer detects an apparent frequency of 505 hz coming from a 500 hz...
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 - 1)As a sound source moves away from a stationary observer, the number ...
PHYSICS - Original Q: If you pour liquid into a tall, narrow glass, you may hear...
Physics - Question about doppler effect: How do you solve when it gives you ...
Physics - A bell with a fundamental frequency of 880 Hz is moving toward an ...

For Further Reading

First Name:
School Subject:
Answer: