« previous next »

Author Question: Tuning forks 1, 2, and 3 each have slightly different frequencies.When 1 and 2 are sounded together, ... (Read 189 times)

Zulu123

  • Hero Member
  • *****
  • Posts: 525
on: Jul 28, 2018
Tuning forks 1, 2, and 3 each have slightly different frequencies.When 1 and 2 are sounded together, a beat frequency of 3 Hz results. When 2 and 3 are sounded together, a beat frequency of 5 Hz results. If the frequency of 1 is 100 Hz, which of the following cannot be the frequency of 3?
 a. 92 Hz
  b. 95 Hz
  c. 98 Hz
  d. 102 Hz
  e. 108 Hz

Question 2

A fire engine approaches a wall at 5 m/s while the siren emits a tone of 500 Hz frequency. At the time, the speed of sound in air is 340 m/s. How many beats per second do the people on the fire engine hear?
 a. 0
  b. 15
  c. 29
  d. 63
  e. 250


ankilker

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

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?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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.

Weber test: Place the base of the tuning fork on top of the client’s head. Weber test: Place the base of the tuning fork on top of the client’s head.
Tuning fork tests Tuning fork tests
Tuning Curves Tuning Curves
Activating the tuning fork Activating the tuning fork
Consequences of Self-Fertilization for Genotype Frequencies Consequences of Self-Fertilization for Genotype Frequencies
Color-enhanced electron micrograph of a DNA replication bubble and replication forks Color-enhanced electron micrograph of a DNA replication bubble and replication forks
Video: Hemodynamics Animation

For a complete list of videos, visit our video library