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 99 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?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Activating a gene to produce “marathon mice.” Activating a gene to produce “marathon mice.”
The path of sound waves through the outer, middle, and inner ear. The path of sound waves through the outer, middle, and inner ear.
A boy walks past a member of the unofficial “community police” in Cruz Grande, Guerrero, Mexico. A boy walks past a member of the unofficial “community police” in Cruz Grande, Guerrero, Mexico.
Sustainable Food Systems Are Environmentally Friendly, Economically Sound, and Socially Equitable Sustainable Food Systems Are Environmentally Friendly, Economically Sound, and Socially Equitable
Normal frequency distribution, characterized by a bell-shaped curve Normal frequency distribution, characterized by a bell-shaped curve
opener E. coli have been genetically engineered to produce lycopene opener E. coli have been genetically engineered to produce lycopene
Video: Frequency of stimulation and force (Recruitment of motor units and force)

For a complete list of videos, visit our video library