20) The intensity level of sound of a truck is 92 deci- bels. What is the intensity of this sound? I₁ = 10-¹2

College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter24: Electromagnetic Waves
Section: Chapter Questions
Problem 51PE: Create Your Own Problem Consider electromagnetic fields produced by high voltage power lines....
icon
Related questions
icon
Concept explainers
Question
Question 20
18) A wire with a current of 2.8A is at an angle of 36
degrees relative to a magnetic field of 0.88 T. Find the
force exerted on a 2.25 m length of wire?
19) Waves on a particular string travel with a speed of
16 m/s. By what factor should the tension in the string
be changed to produce waves with a speed of 32 m/s?
20) The intensity level of sound of a truck is 92 deci-
bels. What is the intensity of this sound? Io:
10-12
21) A train moving with a speed of 32 m/s sounds a
140 Hz horn. What frequency is heard by an observer
standing near the tracks as the train approached?
22) Two sources emit waves that are in phase with each
other. What is the longest wavelength that will give
constructive interference at an observation point of 161
m from one source and 295 m from another source?
Transcribed Image Text:18) A wire with a current of 2.8A is at an angle of 36 degrees relative to a magnetic field of 0.88 T. Find the force exerted on a 2.25 m length of wire? 19) Waves on a particular string travel with a speed of 16 m/s. By what factor should the tension in the string be changed to produce waves with a speed of 32 m/s? 20) The intensity level of sound of a truck is 92 deci- bels. What is the intensity of this sound? Io: 10-12 21) A train moving with a speed of 32 m/s sounds a 140 Hz horn. What frequency is heard by an observer standing near the tracks as the train approached? 22) Two sources emit waves that are in phase with each other. What is the longest wavelength that will give constructive interference at an observation point of 161 m from one source and 295 m from another source?
Expert Solution
steps

Step by step

Solved in 3 steps

Blurred answer
Knowledge Booster
Properties of sound
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781938168000
Author:
Paul Peter Urone, Roger Hinrichs
Publisher:
OpenStax College
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Physics for Scientists and Engineers with Modern …
Physics for Scientists and Engineers with Modern …
Physics
ISBN:
9781337553292
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Physics for Scientists and Engineers, Technology …
Physics for Scientists and Engineers, Technology …
Physics
ISBN:
9781305116399
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Principles of Physics: A Calculus-Based Text
Principles of Physics: A Calculus-Based Text
Physics
ISBN:
9781133104261
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
University Physics Volume 2
University Physics Volume 2
Physics
ISBN:
9781938168161
Author:
OpenStax
Publisher:
OpenStax