This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Two police cars have identical sirens that produce sound of frequency of 570 Hz. A stationary ... (Read 145 times)

Ebrown

  • Hero Member
  • *****
  • Posts: 567
on: Jul 29, 2018
Two police cars have identical sirens that produce sound of frequency of 570 Hz. A stationary listener is standing between two cars.
 
  One car is parked and the other is approaching the listener and both have their sirens on. The listener measures 9.0 beats per second. Find the speed of the approaching police car. The speed of sound is 340 m/s.

Question 2

A violin with string length 32 cm and string density resonates in its fundamental with the first overtone of a 2.0-m organ pipe with one end closed and one end open. What is the tension in the string if the speed of sound in air is 344 m/s?
 
  A) 110 N B) 4100 N C) 56 N D) 1000 N E) 450 N


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kilada

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jul 29, 2018
Answer to Question 1

5.3 m/s

Answer to Question 2

D


Ebrown

  • Hero Member
  • *****
  • Posts: 567
Reply #2 on: Jul 29, 2018
Thank you!


kilada

  • Sr. Member
  • ****
  • Posts: 311
Reply #3 on: Jul 29, 2018
Always glad to help...


« previous next »
 

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

A single crossover cannot produce a viable recombinant A single crossover cannot produce a viable recombinant
Frequency coding in the nervous system: Threshold stimulus. Frequency coding in the nervous system: Threshold stimulus.
As some groups do ethnic work, they produce a mythical long-lost heritage, as in this photo of ... As some groups do ethnic work, they produce a mythical long-lost heritage, as in this photo of ...
The relation between the physical and perceptual dimensions of sound. The relation between the physical and perceptual dimensions of sound.
Frequency distribution of phenotypes from the possible offspring in Figure 5.7. Height of the offspr Frequency distribution of phenotypes from the possible offspring in Figure 5.7. Height of the offspr
The effect of selection on allele frequency The effect of selection on allele frequency
Video: Summation - defined, spatial, temporal & AP generation or not

For a complete list of videos, visit our video library