Determine the intensity level of the infrasound

Assignment Help Physics
Reference no: EM13551642

There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. The intensity level of these sounds can reach 95 dB, measured a distance of 4.5 m from the source. Determine the intensity level of the infrasound 10 km from the source, assuming the sound energy radiates uniformly in all directions.

Reference no: EM13551642

Questions Cloud

What frequency does stationary listener hear sound as plane : An airplane traveling at half the speed of sound emits a sound of frequency 5.31 kHz. (a) At what frequency does a stationary listener hear the sound as the plane approaches? (b) At what frequency does a stationary listener hear the sound after the p..
An electron moving in the positive x direction experiences : An electron moving in the positive x direction experiences a magnetic force in the positive z direction. If Bx=0, then what is the direction of the magnetic field? I got the positive y direction, but the answer is the negative y direction, why is ..
Find the magnitude of the current in wire in milliamperes : A long circular pipe with outside radius R = 3.00 cm carries a (uniformly distributed) current i = 13.8 mA into the page. A wire runs parallel to the pipe at a distance of 3.00R from center to center.
Person wears hearing aid that uniformly increases intensity : A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 26.2 dB. The hearing aid picks up sound having a frequency of 250 Hz at an intensity of 2.40 10-11 W/m2. What is the intensity delivered ..
Determine the intensity level of the infrasound : There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. The intensity level of these sounds can reach 95 dB, measured a distance of 4.5 m from the source.
Find the consisting of the platform and its population : A 101-kg horizontal platform is a uniform disk of radius 1.97 m and can rotate about the vertical axis through its center. A 67.9-kg person stands on the platform at a distance of 1.19 m from the center and a 27.3-kg dog sits on the platform near the..
What is the new rate of rotation of the turntable : A turntable has moment of inertia 0.0300 kg m2 and is rotating at 25.0 rev/min. A 0.300 kg ball of clay is dropped vertically onto the turntable and sticks at a point 0.100 m from the center. What is the new rate of rotation of the turntable?
Assume that strings do not slip as the tension is applied : A child\'s top is held in place, upright on a frictionless surface. The axle has a radius of r = 3.96 mm. Two strings are wrapped around the axle, and the top is set spinning by applying T = 3.15 N of constant tension to each string
Change in radius is very small relative to initial radius : A solid brass (bulk modulus 6.7 x 10^10 N/m^2) sphere is subjected to a pressure of 1.0 x 10^5 Pa due to the earth's atmosphere. On Venus the pressure is 9.0 x 10^6 Pa. By what fraction change in radius/ initial radius does the radius sphere change w..

Reviews

Write a Review

Physics Questions & Answers

  Two point charges are on the y-axis

A copper telephone wire has essentially no sag between poles 20.5 meters apart on a winter day while the temperature is -15.5° C. How much longer is the wire on the summer day when the temperature is 27.0° C.

  Find out the greatest horizontal range of the rocket

A crate is sliding down a ramp that is inclined at the angle of 33° above the horizontal. The coefficient of kinetic friction between the crate and the ramp surface is 0.479. Find the acceleration of the moving crate.

  Find the ratio of the larger power to the smaller power

Two atmospheric sound sources A and B emit isotropically at constant power. find the ratio of the larger power to the smaller power

  What are the finite positive and negative values of x

In the figure particles with charges q1 = +5e and q2 = -13e are fixed in place with a separation of d = 21.3 cm, what are the finite positive and  negative values of x

  What is your speed at the end of this time

You are driving a car with a speed of 25 m/s. You slam on your brakes for 1.50 seconds causing your car to decelerate at a constant rate of 4.50 m/s^2. What is your speed at the end of this time?

  How much current is flowing in the tube

A tube of mercury with resistivity 9.84*10^-7 *m has a 23 N/C electric field inside the column of mercury. How much current is flowing, if the diameter of the tube is

  Estimate the apparent thickness of the plate

A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. The plate is 11.00 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 12.5 cm. Calculate the apparent thickness of the plate

  Calculate the maximum velocity attained by the object

An object with mass 3.5 is attached to a spring with spring stiffness constant 300 and is executing simple harmonic motion. Calculate the maximum velocity attained by the object

  What is radius of curve

A car goes around a curve on a road that is banked at an angle of 35.0^\circ. What is radius of curve

  What is the gravitational force of the moon on the earth

What is the gravitational force of the moon on the earth and What is the gravitational force of the sun on the earth

  What is the period of the satellite

A satellite circles the earth in an orbit whose radius is 2.78 times the earth's radius. What is the period of the satellite

  Determine how far would it have traveled in a vacuum

A flat sheet of crystalline quartz has a thickness of 1.0 cm. It is on top of a flat sheet of diamond that has a thickness of 1.2 cm. how far would it have traveled in a vacuum

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