Homework Answers
ANSWER b) 4 meters
The sound pressure reflects from a point source is the spherical sound divergence. In spherical divergance, the radiation of sound is equal in each direction. But the sound started getting reduced around 6 dB when the distance is double from the point of source and similarly the 6 dB is incresed on each halvation.
Add Answer to:
title: ergonomics
A point source in a free field (no reflected sound waves) produces a sound...
2 parts thx :) 1. A point source emits sound waves isotropically. A sound meter measures...
2 parts thx :) 1. A point source emits sound waves isotropically. A sound meter measures a sound level of 51 dB at location C and a sound level of 48.47 at location D, a distance of 16 m from location C. The two locations C and D and the point source are all located along the same line. How far from location C is the point source? Give your answer in m, though enter only the numerical part in...
A point source emits sound waves with a power output of 100 watts. What is the...
A point source emits sound waves with a power output of 100 watts. What is the sound level (in dB) at a distance of 10 m? 16-5
A constant output loudspeaker produces a sound level of 97 dB at 10 feet when located...
A constant output loudspeaker produces a sound level of 97 dB at 10 feet when located at the corner of two walls. What will be the sound level at the same distance if it is placed in an open area? a. 91 b. 94 d. 103 106 e. f. None of the above c. 97 A 200 Hz source radiates sound that produces a SPL of 85 dB at a distance of 1 meter. Is this SPL in the near-field?...
A 200 Hz source radiates sound that produces a SPL of 85 dB at a distance...
A 200 Hz source radiates sound that produces a SPL of 85 dB at a distance of 1 meter. Is this SPL in the near-field? 6. Yes a. b. No None of the above c.
2) (8 points) Show your work for full credit. An omnidirectional loudspeaker produces sound waves uniformly...
2) (8 points) Show your work for full credit. An omnidirectional loudspeaker produces sound waves uniformly in all directions. A sound intensity of 100 W/mºis measured 1.0 m from the speaker. (a) How far from the speaker will the sound intensity be measured to be 1.0 W/mº? (b) At what distance from the speaker will the sound intensity level be 100.0 dB?
SOUND WAVES 12. Observer 2 is three times as far from a point (spherical) source of...
SOUND WAVES 12. Observer 2 is three times as far from a point (spherical) source of sound as is observer 1. The ratio I2/I1 of the intensities (observer 2 intensity to observer 1 intensity) of the sound detected by the observers is a) 9 b) 1/9 c) 1/3 d) 3 13. Which of the following frequencies would correspond to a sound with an ultrasonic frequency? a) 100Hz b) 1000Hz c) 10000Hz d) 100000Hz
1. The speed of sound in an alcohol at a temperature of 20°C is 1260 m/s....
1. The speed of sound in an alcohol at a temperature of 20°C is 1260 m/s. The density of the alcohol at that temperature is 650 kg/m^3. At a temperature of 20°C, find the bulk modulus of the alcohol. 1030 MPa 1080 MPa 1140 MPa 1190 MPa 1240 MPa 2. During a thunderstorm, you hear the sound 4 s after you see the lightning flash. How far did it fall? Assume the temperature outside is approximately 20 1.324 km 1.372...
question 4-7 4. Travelling Waves and Their Characteristics A rope wave travels in the positive x -direction. You are also told that the speed of the wave is 1000 cm/s, its frequency is 200 H...
question 4-7
4. Travelling Waves and Their Characteristics A rope wave travels in the positive x -direction. You are also told that the speed of the wave is 1000 cm/s, its frequency is 200 Hz, and that the wave is subject to the following initial conditions: at x 0 and t = 0: y =-1 cm, and, at x = 0 and t : ar = +20 cm/s (this is the velocity of the point on the rope at horizontal...
I am completing a study guide for the next section of class because I am trying...
I am completing a study guide for the next section of class
because I am trying to get ahead. Any suggestions?
A wave whose displacement velocity is either in the same direction or opposite direction as the wave velocity describes which type of a wave? a. Transverse wave b. Mechanical wave c. Longitudinal wave d. Electromagnetic wave Which of the following are always one wavelength apart and are drawn as parallel lines? Plane waves b. Wave fronts c. Wave phase...
Just solved (Task 2) Just solved (Task 2) Just solved (Task 2) You work as a...
Just solved (Task 2)
Just solved (Task 2)
Just solved (Task 2)
You work as a technical engineer in a company that designs and installs sound systeins, such as speakers for large halls and open spaces. The company manager has assigned you to design a new sound system for a stadiun, and asked you to make a technical report explaining some preliminary studies on the behaviour of sound waves. Task 1: A When we are designing the sound levels to...
A point source emits sound waves with a power output of 100 watts. What is the sound level (in dB) at a distance of 10 m? 16-5
A constant output loudspeaker produces a sound level of 97 dB at 10 feet when located at the corner of two walls. What will be the sound level at the same distance if it is placed in an open area? a. 91 b. 94 d. 103 106 e. f. None of the above c. 97 A 200 Hz source radiates sound that produces a SPL of 85 dB at a distance of 1 meter. Is this SPL in the near-field?...
A 200 Hz source radiates sound that produces a SPL of 85 dB at a distance of 1 meter. Is this SPL in the near-field? 6. Yes a. b. No None of the above c.
2) (8 points) Show your work for full credit. An omnidirectional loudspeaker produces sound waves uniformly in all directions. A sound intensity of 100 W/mºis measured 1.0 m from the speaker. (a) How far from the speaker will the sound intensity be measured to be 1.0 W/mº? (b) At what distance from the speaker will the sound intensity level be 100.0 dB?
question 4-7
4. Travelling Waves and Their Characteristics A rope wave travels in the positive x -direction. You are also told that the speed of the wave is 1000 cm/s, its frequency is 200 Hz, and that the wave is subject to the following initial conditions: at x 0 and t = 0: y =-1 cm, and, at x = 0 and t : ar = +20 cm/s (this is the velocity of the point on the rope at horizontal...
I am completing a study guide for the next section of class
because I am trying to get ahead. Any suggestions?
A wave whose displacement velocity is either in the same direction or opposite direction as the wave velocity describes which type of a wave? a. Transverse wave b. Mechanical wave c. Longitudinal wave d. Electromagnetic wave Which of the following are always one wavelength apart and are drawn as parallel lines? Plane waves b. Wave fronts c. Wave phase...
Just solved (Task 2)
Just solved (Task 2)
Just solved (Task 2)
You work as a technical engineer in a company that designs and installs sound systeins, such as speakers for large halls and open spaces. The company manager has assigned you to design a new sound system for a stadiun, and asked you to make a technical report explaining some preliminary studies on the behaviour of sound waves. Task 1: A When we are designing the sound levels to...
Most questions answered within 3 hours.
-
Assume that the situation can be expressed as a linear cost
function. Find the cost function....
asked 1 hour ago -
(Sort ArrayList) Write the following method that sorts an
ArrayList: public static > void sort(ArrayList list)...
asked 2 hours ago -
2) A 9 volt battery is connected to a parallel plate capacitor
with an initial capacitance...
asked 1 hour ago -
Prince Equipment has to decide whether to obtain $1,000,000 of
financing by: (1) selling common stock...
asked 2 hours ago -
The terms electrical and electronic have similar but
different meanings which of the following statement is...
asked 2 hours ago -
You wish to test the claim that the mean GPA of night students
is than 2.5...
asked 3 hours ago -
A soft drink machine outputs a mean of 25 ounces per cup. The
machine's output is...
asked 4 hours ago -
Ross Co., Westerfield, Inc., and Jordan Company announced a new
agreement to market their respective products...
asked 3 hours ago -
What is the distance run by a runner 50m/hr and
60m/hr?
asked 4 hours ago -
Write a descendant selector rule that affects the <em>
element that is contained within the
<p>...
asked 4 hours ago -
The management of an electrical manufacturing plant determined
that the mean life of their 10 watt...
asked 4 hours ago -
On January 1, Year 1, Prairie Enterprises purchased a parcel of
land for $13,100 cash. At...
asked 5 hours ago