Sound waves move uniformly in all directions

Assignment Help Physics
Reference no: EM13660690

You’re out at the park with some friends where there is an open-air concert. Standing 20. meters from the stage, the music is a agreeably loud 90. dB. After a while you all decide to move somewhere quieter where you can hear each other talk. How far away from the stage must you go so that the music loudness is only 60. dB? You can suppose that the sound waves move uniformly in all directions—don’t worry about reflections off the ground.

Reference no: EM13660690

Questions Cloud

What is the magnitude of the torque on the current loop : A square current loop 4.90 cm on all side carries a 510mA current. The loop is in a 1.40 T uniform magnetic field. The axis of the loop, perpendicular to the plane of the loop, is 30 degrees away from the field direction.
Maximum height will block rise above its initial position : A 10-g bullet moving 1000 m/s strikes and passes during a2.0-kg block initially at rest, as shown. The bullet emerges from the block with a speed of 300 m/s. To what maximum height will the block rise above its initial position?
Two students perform an experiment with a train and a ball : Two students perform an experiment with a train and a ball. Student A rides on a flatcar pulled at 8.35 m/s by a train on a straight, horizontal track. Student B stands at rest, on the ground near the tracks. Student A throw ball with an initial ange..
Layer of air among these two elevations : In the air over a particular region at an altitude of 500 m above the ground, the electric field is 130 N/C directed downward. At 600 m above the ground, the electric field is90 N/C downward. What is the average volume charge density in the layer of ..
Sound waves move uniformly in all directions : You’re out at the park with some friends where there is an open-air concert. Standing 20. meters from the stage, the music is a agreeably loud 90. dB. After a while you all decide to move somewhere quieter where you can hear each other talk.
Earthquakes are basically sound waves : Earthquakes are basically sound waves (seismic waves) traveling through the earth. Because the earth is solid, it can support both “P waves” (longitudinal) and “S waves” (transverse). The P waves travel at 8000m/s, while S waves are slower, only 4500..
Prepare a routine email and one goodwill email : Prepare a routine email and one goodwill email for the organization you are in using the above case study content. Use the content to inform your organization's members about the budget cutbacks
Explain what is a speech to inform : Explain what is a speech to inform? Explain the different kinds of speeches to inform and provide examples of when these kinds of speeches would be appropriate.
A public speech on medical marijuana : A public speech on medical marijuana, will someone help me about conclusions and introductions. Will someone help me write an essay on how i medical marijuana is a problem. please don't give solutions, remember is a problem speech.

Reviews

Write a Review

Physics Questions & Answers

  Energy is required to accelerate a spaceship with rest mass

How much energy is required to accelerate a spaceship with a rest mass of 112 metric tons to a speed of 0.445 c? Every day our Earth receives 1.55×1022 J energy from the Sun. If we were able to use 1.05 percent of this energy to accelerate spaceships..

  Using thermogravimetric curve

Using thermogravimetric curve we can relate the mass changes to the stoichiometry involved. calculate the percentage weight loss for the following compounds when they are heated at uniform rate in thermogravimetric analysis.

  Determine the altitude as crosses the bar

A 42 kg pole vaulter running at 11 m/s vaults over the bar. Her speed while she is above the bar is 0.7 m/s. Avoid air resistance, as well as any energy absorbed by pole, and determine her altitude as she crosses the bar.

  Calculate magnitude of the normal force exerted on the mower

A person pushes a 16-kg lawn mower at constand speed with a force F= 80N directed along the handle, which is at an angle of 45 degrees to the horizontal. Calculate the magnitude of the Normal force exerted on the mower.

  Calculate the mass of this object

A uniform circular plate of radius 15 cm has a circular hole of radius 3 cm cut out of it. If the mass per unit area of material is 5 g/cm2, what is the mass of this object

  Determine how much thermal energy is created

A 900 N c rate s lides 12 m down a ramp that makes an angle of 3So with the horizontal. how much thermal energy is created

  Calculate how much work does the crane do

A crane lifts a 650-{\rm kg} beam vertically upward 23 {\rm m} and then swings it eastward 18 {\rm m}. How much work does the crane do

  Evaluate the capacitance of the second capacitor

A capacitor is connected across the terminals of an ac generator that has a frequency of 430 Hz and supplies a voltage of 19 V. Find the capacitance of the second capacitor

  What is the magnitude of its angular acceleration

A CD originally at rest reaches an angular speed of 39 rad/s in 4.8 s. What is the magnitude of its angular acceleration

  Calculate the mass of a solid gold rectangular bar

Calculate the mass of a solid gold rectangular bar with dimensions 3.50 cm x 14.0 cm x 27.0 cm. Density of gold is 1.93E4 kg/m^3

  What is the acceleration of the lower crate

Two wooden crates rest on top of one another. The smaller top crate has a mass of m1=20kg and the larger bottom crate has a mass of m2=88kg. what is the acceleration of the lower crate

  What is average force exerted on ball through collision

A 150 g baseball is thrown toward home plate by a speed of 40.0m/s. The batter hits the ball directly back at the pitcher with a speed of 50.0 m/s. What is the change in momentum of the ball?

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