College Physics

posted by .

A vacuum cleaner has a measured sound level of 75.7 dB. What is the intensity of this sound? Answer in units of W/m^2

  • College Physics -

    B=75.7 dB
    I=1x10^-2 W/m^2

    B=10 log (I/I°)
    I=I°10^3/10=(1x10^-2 W/m^2) 10^7.57
    =3.71535x10^-5 W/m^2

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    This time I have two questions: #1.A recording engineer works in a soundproofed room that is 49.7 dB quieter than the outside. If the sound intensity in the room is 2.66 x 10-10 W/m2, what is the intensity outside?
  2. physics - sound level

    The source of a sound wave has a power of 2.50 µW. Assume it is a point source. (a) What is the intensity 6.70 m away?
  3. Physics

    The intensity due to a number of indipendent sound sources is the sum of the individual intensities. A) When four quadruplets cry simultaneously, how many decibels greater is the sound intensity level than when a single one cries?
  4. Physics

    Your stereo is set to a sound intensity level (SIL) of 60 dB. I'd like to know what this means in terms of energy flow: what is the intensity of the sound wave this produces?
  5. physics

    Factory Worker A is exposed to a sound of a constant intensity of 6.30 × 10–4 W m–2 at a distance of 1.00 m from a noisy machine. The frequency of the sound is 4.00 kHz. (a) What is the sound level in decibels (dB) of this sound?
  6. Physics(Please help)

    The intensity (in W/m2) of one sound is 4.83 times as great as the intensity of another sound. Relative to the quieter sound, what is the intensity level â of the louder sound?
  7. Physics- Elena please help!

    An interstate highway has been built though a poor neighborhood in a city. In the afternoon, the sound level in a rented room is 114.0 dB as 172 cars pass outside the window every minute. (a) What is the sound intensity during the …
  8. physics

    the intensity level of a sound A is5dB greater than that of sound B and 3dB less than that of C. determine the ratio (Ic/Ib) of the intensity of sound C to that of sound B.
  9. PreCalculas

    The psychological sensation of loudness B is measured in decibels and is defined with reference to the intensity, , of a barely audible sound by the following equation. In this equation, I is the intensity of the sound in question. …
  10. LOGS

    The decibel level of a sound is given by dB=10log(EE0), where E0=10−12wattsm2 and E is the intensity of the sound. (a) Find the intensity of a 80-decibel sound. E= watts per square meter. (b) How many times more intense is the …

More Similar Questions