Asked Nov 21, 2019

At a distance of 4 m from a certain sound source, the sound level intensity is 70 dB. What is the power being emitted by the sound source? (Assume I0=10−12W/m2.)


Expert Answer

Step 1

Image Transcriptionclose

Given that at a distance of 4m, the sound level intensity is 70dB Intensity level of sound is calculated by I B10log I Ix10 70 I=| 10-12 W x 10 m W -x 10 I =10-12 2 1 105 W/m2


Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in



Related Physics Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: 1. If you have two compasses, each one is a dipole, and depending on the strength of the magnetic fi...

A: One of the stable configurations of the compass is:


Q: An inductance coil operates at 240 V and 60.0 Hz. It draws 11.7 A . What is the coil's inductance?

A: Voltage across the inductor is,


Q: 12. A block of mass 2 kg hangs from a spring of spring constant 18 N/m. It is lifted up to a height ...

A: (a) Period of motion is,


Q: One way to attack a satellite in Earth orbit is to launch a swarm of pellets in the same orbit as th...

A: (a)In reference plane of the satellite the velocity of the pellets will be in opposite direction.The...


Q: A spring with spring constant 20.0 N/m is attached to a wall on one end, and a 4.00 kg block on the ...

A: Consider a spring with spring constant 20N/m and mass 4kg attached to a wall.


Q: A spring has a force constant of 12.9 N/m and a rest length of 0.25 m. Some amount of work is expend...

A: The work done expended to stretch the spring is


Q: What battery voltage is necessary to supply 0.64 A of current to a circuit with a resistance of 22 Ω...

A: Ohm’s law is given by


Q: 32. Suppose your car was mired deeply in the mud and you wanted to use the method illustrated in Fig...

A: (a)The horizontal component of the tension in the string attached to a car and on the tree is,The ve...


Q: A 0.771 kg sample of lead is in its solid state at a temperature of 294.6 C. How much energy is requ...

A: Consider the lead of mass m having latent heat of fusion Lf.