Workers around jet aircrafts typically wear protective devices over their ears, as the sound level of a jet airplane engine is typically around 140 dB at 30 m. The average human ear is assumed to be circular, and has an effective radius of 2.2 cm. Considering, what would be the power intercepted by an unprotected ear from a jet airplane engine?  PLEASE SHOW ALL WORK AND UNITS.

Aasap plzzz

A rock band playing an outdoor concert produces sound at 120 dB 6.00 m away from their single working loudspeaker. What is the power of this speaker, in Watts? (Hint: What is the sound intensity at this location?) Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

Problem #3: What intensity level dB in does a sound of 3. 04 × 10–4 W/m2 correspond to?

I need the answer as soon as possible

Suppose the purr of a cat has a sound intensity that is 370 times greater than the threshold level. Find the decible value for this cat’s purr. Round to the nearest decible. ? dB

(a) What is the speed of sound in a medium where a 100-kHz frequency produces a 5.96-cm wavelength? (b) Which substance in Table 17.1 is this likely to be?

Suppose you want to build a musical instrument with a hollow pipe that is open at one end and closed at the other.  You will make it oscillate by blowing  air across one end.  If it has length 0.8 meters,  what frequency will it resonate at in hertz (Hz)?  Assume the speed of sound in warm moist air is 340 m/s?  Please enter only a number without units so that Blackboard will understand and be able to correctly assess your work.