Physics, 01.11.2019 03:31 nickthequick

You purchased a new set noise-cancelling headphones to wear on your plane ride to hawaii last month. the intensity of the background noise on the plane (prior to wearing the headphones) was 4 x 10-2 w/m2. when wearing the headphones, the intensity of the noise was reduced to 2 x 10-3 w/m2. how much noise reduction (in db) did the headphones provide?

Answers: 2

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 22:30, tladitidimatso1783

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

Answers: 1

continue

Physics, 22.06.2019 04:00, louiecampos

Determine the maximum r-value of the polar equation r =3+3 cos 0

Answers: 1

continue

Physics, 22.06.2019 07:20, swkgp3cevk

What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.

Answers: 3

continue

Physics, 22.06.2019 10:50, dontcareanyonemo

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

Answers: 3

continue

You know the right answer?

You purchased a new set noise-cancelling headphones to wear on your plane ride to hawaii last month....