A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 355. When a jet aircraft is taking off, the sound intensity level experienced by the crew member is 72 dB. What sound intensity level would the crew member experience if he removed the protective earplugs?

What is the decibel level of a sound that has an intensity of 10.4 x 10-5 W/m2? Assume the standard dB level scale where the reference intensity is 1 x 10-12 W/m2

The intensity level in decibels is defined as 10 log10(I/I0), where I0 is a reference intensity equal to the human threshold of hearing, 10–12 W/m2. What is the intensity of the threshold of pain, 120 decibels? answer is : 10° W/m2   I'm not sure how they got this answer

Chapter 16, Problem 069 Your answer is partially correct. Try again. ES. lem The bellow of a territorial bull hippopotamus is measured at 116 dB above the threshold of hearing. What is the sound intensity? Hint: The threshold of human hearing is Io = 1.00 x 10-12 W/m2. plem %3D blem Number Units W/m^2 ▼ oblem the tolerance is +/-5% oblem roblem SHOW HINT Problem LINK TO TEXT Problem Problem By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Problem Question Attempts: 1 of 6 used SUBMIT ANSWER SAVE FOR LATER Problem Earn Maximum Points available only if you 8:02 PM 4/29/2020 19 e here to search 21 ASL pause break prt sc sysrq f11 f12 insert f8 f9 f10 f4 f5 f6 f7 f2 f3 backspace & %24 80 4 96

The intensity of a certain sound wave is 4.0 x 10-4 W/m2. If the intensity level of the sound increases by 30 dB, the intensity has increased to which of the following: 1.2 x 10-2 W/m2 4.0 x 10-2 W/m2 4.0 x 10-1 W/m2 1.33 x 10-1 W/m2

A source of sound changes, so that it outputs half of its original power.  If the distance between you and the source didn't change, by what factor does the sound intensity you experience change?

From a vantage point very close to the track at a stock car race, you hear the sound emitted by a moving car. You detect a frequency that is 0.855 times smaller than that emitted by the car when it is stationary. The speed of sound is 343 m/s. What is the speed of the car?

You hear a sound of (5.6x10^1) decibels. What is the intensity? Give your answer in microwatts/m2 to 2 sf. Assume the threshold of human hearing is 1.0x10-12 W/m². Use two significant figures for your answer. Note: 1 µW = 1×106 W Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: х10 Answer

A round speaker emits sound waves uniformly in all direction. At a distance of 40.0m from the speaker, the sound intensity is 35 dB. What is the sound intensity level in a distance of 10.0m.

A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 64.0 kHz, and if the speed of sound in air is 340 m/s, what is the smallest insect a bat can detect?