PHY2010 HW 3 Fall 2013 . Show your work. Answer on separate paper
Use 345 m/s for the speed of sound
1. In a given string, the tension is 200N and the mass per unit length is 0.1 kg/m. What is the wave
speed?
a) 20 m/s
b) 45 m/s
c) 450 m/s
d) 2000 m/s
2.
PHY2010: Simple Harmonic Motion
Simple Harmonic Motion (SHM) is an indispensable paradigm for understanding a wide
variety of physical phenomena, including much of acoustics.
The canonical system demonstrating SHM is a mass m connected to a spring with sp
AET Physics 2010 Test 2
Show all work
100 points
Turn off all cell phones.
Use 1140 ft/s for the speed of sound in air.
Part 1: Multiple Choice. Select the answer you deem most correct. No need to show work.
1. (5 points) At 10m from a source the SIL is 1
Seed = 234. * SOLUTION(S) *
Test 1 - Practice, Physics 2010, Fall 2012, Dr. Hawley
Use 345 m/s as the speed of sound.
1. (5 points) The speed of light is 3.0e+8 m/s. What frequency of light corresponds to a wavelength of 5.56e-07
m?
a) 2.7e+14 Hz
b) 1.35e
PHY2010 HW9 - Modes - Answers.
1. (1 point) Describe the gist of the "small room problem."
Small rooms tend to have the "B" frequency region (see question #2) well into the
range of (low) audible frequencies. The modal density at these frequencies is thus
PHY2010 HW 7
1. To what must the decay variations in Everest Figure 11-8 be attributed?
Answer: The random nature of the noise signal.
2. What assumptions are implied when we speak of a "reverberation time"?
Answer: High modal density, which implies unifo
PHY2010 HW9 Modes
1. (1 point) Describe the gist of the "small room problem."
2. (2 points) Name and describe the four frequency regions associated with modes in a
room.
3. (2 points) What is meant by these three terms: axial, tangential, oblique? Which o
PHY2010 HW 7
1. To what must the decay variations in Everest Figure 11-8 be attributed?
2. What assumptions are implied when we speak of a "reverberation time"?
3. What is an "electroacoustically coupled" space?
4. What does Everest recommend for the reve
PHY2010 HW 3 Fall 2013 - Answers
Use 345 m/s for the speed of sound
1. In a given string, the tension is 200N and the mass per unit length is 0.1 kg/m. What is the wave speed?
a) 20 m/s
b) 45 m/s
c) 450 m/s
d) 2000 m/s
v=
T
200 N
=
= 44.7 m/s 45m/s
0.1 kg
PHY2010 HW 6.
1. Match the following acoustical concepts with their definitions
Liveness
Shadows
Texture
Brilliance
Clarity
Focusing
Fullness
Blend
External noise
Intimacy
Echoes
a. First reflected sound arrives <20ms after direct
b. Large reflected sound
PHY2010 Activity/Homework 5: Logarithms, SIL & SPL
The response of the human ear to sound intensity is roughly logarithmic. Thus we use a log-base-ten scale,
called the deciBel (dB) scale, in which we describe the ratio of a given sound intensity I to som
Name:_
AET Physics 2010, Practice Final Exam
Show all work. Turn off all cell phones.
Use 1130 ft/s for the speed of sound in air.
Multiple Choice (40 points): Circle the "best" answer. No need to show your work
Questions 1 & 2: A power line is 5 m long,
PHY2010 HW 6. Dr. Hawleys Answers
1. Match the following acoustical concepts with their definitions
Liveness h.
Shadows j.
Texture f.
Brilliance g.
Clarity i.
Focusing c.
Fullness e.
Blend k.
External noise d.
Intimacy a.
Echoes b.
a. First reflected soun
PHY2010 Activity/Homework 5: Logarithms, SIL & SPL
The response of the human ear to sound intensity is roughly logarithmic. Thus we use a log-base-ten scale,
called the deciBel (dB) scale, in which we describe the ratio of a given sound intensity I to som
Name:_
AET Physics 2010, Practice Final Exam
Show all work. Turn off all cell phones.
Use 1130 ft/s for the speed of sound in air.
Multiple Choice (40 points): Circle the "best" answer. No need to show your work
Questions 1 & 2: A power line is 5 m long,
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Business Ethics 3230.07
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