The frequency of the faintest audible sound is about 1,000hz. what is the pressure variation corresponding to this sound.

a. 1x10^-12pa

b. 3x1=^-5pa

c. 5x10^-2pa

d. 30.pa

Option B

Explanation:

Variation of pressure, is given by

Where v is the speed of sound, i is the intensity, rho is the density of air whose value is taken as 1.2 Kg/m3

Taking the speed of sound in air as 334 m/s then

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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