Question
Asked Nov 24, 2019
22 views

The volume control on a surround sound amplifier is adjusted so the sound intensity level at the listining position increase from 22 to 66 dB. What is the raiton of the final sound intensity to the original sound intensity?

check_circle

Expert Answer

Step 1

Relation between sound in decibel (dB) and sound intensity is:

help_outline

Image Transcriptionclose

I dB B-10log

fullscreen
Step 2

Write the relation between the intensities at two points. Subtract the decibel intensities at two points in order to find the ratio of sound intensities.

help_outline

Image Transcriptionclose

-10log B2-P10log dB B2-P10log dB

fullscreen
Step 3

Substitute the know va...

help_outline

Image Transcriptionclose

dв B-P10log dB 66 dB -22 dB 10 log| 44 = log | 10 I, log = 4.4

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Physics

Wave Motion

Related Physics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: The middle C string on a piano is under a tension of 951 N. The period and wavelength of a wave on t...

A: Given,

question_answer

Q: Suppose a balloon of constant mass M contains a bag of sand of mass Mo experiences a constant force ...

A: Consider the total mass(balloon+sand) of the system is denoted by M’ (M+M0) and it experiences a con...

question_answer

Q: The velocity as a function of time is given as v(t) = 6t−t2 in m/s and t in seconds (s). Consider th...

A: Given:

question_answer

Q: Two identical guitar strings are prepared such that they have the same length (0.66 m) and are under...

A: The expression for beat frequency is,

question_answer

Q: A 131.0-N bird feeder is supported by three cables as shown in the figure below. Find the tension in...

A: The free body diagram is shown below.

question_answer

Q: A uniform solid disk with radius 11 cm has mass 0.5 kg (moment of inertia I = ½MR2). A constant forc...

A: a)The of the angular momentum about the center of the disk is,

question_answer

Q: Chapter 14, Problem 033 An iron anchor of density 7870.00 kg/m3 appears 293 N lighter in water than ...

A: Given:Density of the iron anchor = 7870 kg/m3Buoyant force = 293 NDensity of water = 1000 kg/m3

question_answer

Q: **20. A 4-kg block is attached to a spring, and oscillates horizontally on a frictionless table- top...

A: angular velocity and the amplitude of motion can be calculated as follows,

question_answer

Q: A 52.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diamete...

A: Since we are entitled to answer up to 3 sub-parts, we’ll answer the first 3 as you have not mentione...