« previous next »

Author Question: Tuning forks 1, 2, and 3 each have slightly different frequencies.When 1 and 2 are sounded together, ... (Read 198 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?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Ardipithecus kadabba has large canine teeth that are only slightly smaller than those of living apes Ardipithecus kadabba has large canine teeth that are only slightly smaller than those of living apes
Tuning Curves Tuning Curves
Tuning fork Tuning fork
Tuning fork Tuning fork
Calculating genotype frequencies from allele frequencies Calculating genotype frequencies from allele frequencies
The general description of allele and genotype frequencies under Hardy–Weinberg assumptions The general description of allele and genotype frequencies under Hardy–Weinberg assumptions
Video: Dissociative Disorders (Part 3)

For a complete list of videos, visit our video library