Elephants communicate via infrasound-generating rumbling

Assignment Help Physics
Reference no: EM13564597

There is evidence that elephants communicate via infrasound,generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source. Determine the intensity levelof the infrasound 10 km from the source, assuming the sound energyradiates uniformly in all directions.

Reference no: EM13564597

Questions Cloud

What is the combinations kinetic energy : In the figure, two particles, each with mass m = 0.82 kg,are fastened to each other, and to a rotation axis at O,by two thin rods, each with length d = 5.7 cm and massM = 1.4 kg. The combination rotates around the rotationaxis with angular speed ω..
Rotational inertia of the cylinder about axis of rotation : A uniform cylinder of radius 10 cm and mass 13 kg is mounted so asto rotate freely about a horizontal axis that is parallel to and3.2 cm from the central longitudinal axis of the cylinder.
Indicate the direction of the electric field : Indicate the direction of the electric field between the plates of the parallel plate capacitor shown in the drawing if themagnetic field is decreasing in time. Specify the direction of theelectric field to be down or up.
Earths magnetic field at the location of the wire : A 45 m length of wire is stretched horizontally between two vertical posts. The wire carries a current of 85 A and experiences a magnetic force of 0.15 N.
Elephants communicate via infrasound-generating rumbling : There is evidence that elephants communicate via infrasound,generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source.
What is the total work done on the blockwhen the block slide : A 7.0-kg block slides down a frictionless incline making an angle of 60.0° withthe horizontal. What is the total work done on the blockwhen the block slides 1.1 m
What is his own age and age of the earth-based twin brother : One 20-year-old twin brother takes a space trip with a speed of0.80c for 30 years according to a clock on the spaceship. Upon returning to the Earth, what is his own age and the age of the Earth-based twin brother?
Each spring is attached between the ceiling and the object : Review Conceptual Example 2 as an aid in solving this problem. An object is attached to the lower end of a 100-coil spring that is hanging fromthe ceiling. The spring stretches by 0.172 m. The spring is then cut into two identical springs of 50 co..
Front of the mirror is the second object located : An object is located 13.5 cm in front of a convex mirror, the image being 7.45 cm behind the mirror. A second object, twice as tall as the first one, is placed in front of the mirror, but at a different location.

Reviews

Write a Review

 

Physics Questions & Answers

  Find how much energy is transferred to each eardrum

At a rock concert, the sound intensity 1.0m in front of the bank of loudspeakers is 0.10W/m^2. How much energy is transferred to each eardrum in one second

  Calculate the maximum potential energy of the system

A 250-g object attched to a spring oscillates on a frictionless table with a frequency of 4 Hz and an amplitude of 20 cm. Calculate the maximum potential energy of the system

  Obtain the change in the internal energy of the gas

Three moles of an ideal monatomic gas are at a temperature of 345 K.  What is the change in the internal energy of the gas

  What is the initial angular momentum of the system

On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.650m from the axis of rotation of the stool. What is the initial angular momentum of the system

  Find the relative speed of one rocket as seen from the other

a rocket is moving at 0.4c toward a rocket which is moving at 0.5c. what is the relative speed of one rocket as seen from the other

  Find the power needed to do this work

Water is at rest at the bottom of a well of depth h = 7.82 m. A pump lifts mass at a rate of dm/dt = 119 kg/minute from the well and ejects it with a speed v = 3.74. m/s. find P, the power (energy per time) needed to do this work

  What is the energy stored in the inductor

An L-C circuit consists of an inductor with an inductance of 65.0mH and a capacitor with a capacitance of 300 uF . The initial charge on the capacitor is 6.50 uC , and the initial current in the inductor is zero A.)What is the maximum voltage acro..

  Estimate the change in mass of the water

1 kilograms of water are changed from liquid water at 100°C into steam at 100°C. For each situation, determine the change in mass of the water

  Determine the maximum compression of the upper spring

An object, of mass m = 2 kg, is located between two massless springs on a frictionless incline of 30o . Initially the object is held at a position where the lower spring (k1= 950 N/m), Determine the maximum compression of the upper spring

  Question 1two astronauts yuri and valentina are flying

question 1two astronauts yuri and valentina are flying their rockets towards each other both at a speed of 09c as

  Calculate the hydrostatic difference in blood pressure

Calculate the hydrostatic difference in blood pressure between the brain and the foot in a person of height 1.75 m

  Compute decrease in energy when the capacitors are connected

A 25.0 uf capacitor is charged to a potential difference of 850v . The terminals of the charged capacitor are then connected to those of an uncharged 11.0 uf capacitor. Compute the original charge of the system. Compute the final potential difference..

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