Find sound intensity level relative to threshold of hearing

Assignment Help Physics
Reference no: EM13549675

A woman stands a distance d from a loud motor that emits sound uniformly in all directions. The sound intensity at her position is an uncomfortable 2.3×10-3 W/m2. At a distance 3.2 times as far from the motor, what are

(a) the sound intensity and

(b) the sound intensity level relative to the threshold of hearing?

Reference no: EM13549675

Questions Cloud

What is the index of refraction of the coating : A light pipe consists of a central strand of material surrounded by an outer coating. The interior portion of the pipe has an index of refraction of 1.74. If all rays striking the interior walls of the pipe with incident angles greater than 66.6 deg..
Explain water increases the level of liquid in the glass : A criticism of this prediction is that the melting of icebergs does not increase ocean levels any more than the melting of ice in a glass of water increases the level of liquid in the glass. Is this a valid criticism
Determine how many people are at the game : When one person shouts at a football game, the sound intensity level at the center of the field is 61.1 dB. determine how many people are at the game
What is the height of the image formed by metallic sphere : A converging lens of focal length f = 51 cmis placed 179 cm to the left of a metallic sphere of radius R = 1.00 102 cm. An object of height 2.0 101 cm is placed 3.4 101 cm to the left of the lens. What is the height of the image formed by the metalli..
Find sound intensity level relative to threshold of hearing : A woman stands a distance d from a loud motor that emits sound uniformly in all directions. find the sound intensity level relative to the threshold of hearing
Define the value of x in the formula for the hydrate : When 0.228 g of the hydrate ZnSO4•xH2O is heated, 0.128 grams of anhydrous ZnSO4 remains. What is the value of x in the formula for the hydrate
What is the frequency of the fundamental mode : You sing into a well and find that the well resonates at frequencies of 176 Hz and 208 Hz with no resonances between these two frequencies. What is the frequency of the fundamental mode?
Certain kind of glass has an index of refraction : A certain kind of glass has an index of refraction of 1.655 for blue light of wavelength 430 nm and an index of 1.62 for red light of wavelength 680 nm. A beam containing these two colors is incident at an angle of 42.22 degrees on a piece of this g..
Evaluate the amount of heat liberated : Calculate the amount of heat liberated (in KJ) from 316g of Mercury when it cools from 74.8 celcius to 12.0 celcius.

Reviews

Write a Review

Physics Questions & Answers

  How do you find the period of a binary star system

How do you find the period of a binary star system?

  Estimate the radius of curvature of the cornea

To fit a contact lens to a patient's eye, a keratometer can be used to measure the curvature of the cornea-the front surface of the eye. Determine the radius of curvature of the cornea

  Can a proton decay into a neutron and positron

A neutron at rest decays into a proton and an electron. How much Kinetic energy (in MeV) are shared by the electron and proton? Can a proton decay into a neutron and positron?

  By what distance are the red and blue separated

A narrow beam of light containing red (660 nm) and blue (470 nm) wavelengths travels from air through a 1.60 cm thick flat piece of crown glass and back to air again. The beam strikes the glass at a 35.0° incident angle.

  Find the speed of the ball immediately after rebounding

A ball having a mass of 170 g strikes a wall with a speed of 5.0 m/s and rebounds with only 50% of its initial kinetic energy. find the speed of the ball immediately after rebounding

  Illustrate what is the maximum compression of the spring

Iif the collision is perfectly elastic, what is the ball's speed immediately after the collision? Illustrate what is the maximum compression of the spring?

  Find the gravitational potential energy on the first day

In one day, a 85 kg mountain climber ascends from the 1440 m level on a vertical cliff to the top at 2360 m. The next day, she descends from the top to the base of the cliff, which is at an elevation of 1310 m.

  Determine the largest wavelength of the light

A glass lens (nglass = 1.52) has a 136 nm thick anti-reflective film (nfilm = 1.33) on one side. What is the largest wavelength of the light that is totally removed by the film

  Find what is the altitude of the satellite

converging lens with a diameter of 33.0 cm forms an image of a satellite passing overhead. what is the altitude of the satellite

  What is net torque produced by the two forces

A shell of mass m and speed v explodes into two identical fragments. If the shell was moving horizontally (the positive x direction) with respect to Earth, and one of the fragments is subsequently moving vertically with speed v, find out the velocity..

  What is the minimum power of the electric motor

In reality, the COP of the heat pump will only be 60 percent of the ideal value. What is the minimum power of the electric motor when the COP is 60 percent of the ideal value

  Calculate how tall is the tower

A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor, How tall is the tower

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd