How are sound intensity, I and distance from the source, R related? Write hypotheses or claims about why each of these three relationships are linear or not linear:
I vs. 1/R
I vs. 1/R^2
I vs. R^2
Then, explain which one of these relationships is linear and why.
How are sound intensity, I and distance from the source, R related? Write hypotheses or claims...
how to solve it ? D42. If the distance from a source of sound increases by 1 meter, the sound level is decreased by 2 dB. Assume the loudspeaker that is emitting this sound emits sound in all directions. What is the original distance from the sound source? (Ans: 3.86 m)
The intensity of a sound from one source is 8000 times that of another. How much more is the decibel level of the louder sound than that of the quieter one? Answer: Db
The intensity of a light source at a distance is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. Two light sources, one five times as strong as the other, are 9 m apart. At what point on the line segment joining the sources is the intensity the weakest? Write an equation representing the intensity, I, at a distance, x, from the weaker lightbulb, and with k as the...
3. A trumpet creates a sound intensity level of 1.15*102 dB at a distance of 1.00 m. I. What is the sound intensity of a trumpet at this distance? II. What is the sound intensity of five trumpets at this distance? III. Find the sound intensity of five trumpets at the location of the first row of an audience, 8.00 m away, assuming, for simplicity, the sound energy propagates uniformly in all directions. IV. Calculate the decibel level of the...
5. By how many decibels do you reduce the sound intensity level due to a source of sound if you double your distance from it? Assume that the waves expand spherically. dB 6. The sound in a classroom is 63000 times as intense as the minimum threshold of hearing. What is the intensity level of this sound in decibels? dB
Question 8 Consider a source emitting sound at frequency f. The speed of sound wave in the medium is v. (a) Show that the Doppler frequency is for a stationary observer as the source approaches at speed v 12 marks (b) Show that the Doppler frequency is f for a stationary observer as the source recedes at speed v, [2 marks (c) Show that the Doppler frequency is vv as the observer and the source are travelling towards each other...
At point A, 3.20 m from a small source of sound that is emitting uniformly in all directions, the intensity level is 51.0 dB. a) What is the intensity of the sound at A? I got I = 1.26×10−7 W/m2 and it is correct. b)How far from the source must you go so that the intensity is one-fourth of what it was at A? I got R1 R1 = 6.40 m and it is correct. c) How far must you...
The intensity from a point source of waves at a distance of 1 m from the source is 10 W/m^2. At a distance of 10 m the intensity is 1000 W/m^2 100 W/m^2 1 W/m^2 0.1 W/m^2 0.01 W/m^2
Sound Level Workset Name Sdverstone PH105 Spring 2018 Show all math stops and write wnis wi The sound level in decibels is given by Sound Level Exercise ?-10 where / is the intensity in W/mi and A 10 w I. If a sound level is 0 dB, does this mean tut there is no sound? Explain. 2. Does negative dB have meaning? Explain 3. The intensity of a sound from a motorcycle is twice that of a certain car in...
1)The sound level at a distance of 1.82 m from a source is 146 dB. At what distance will the sound level be 50.7 dB? Answer in units of m. 2)At what distance will the sound level be 7.22 dB? Answer in units of m.