# Question

Calculate the intensity generated by a 1.0-W point source of sound at a location

(a) 3.0 m and

(b) 6.0 m from it.

(a) 3.0 m and

(b) 6.0 m from it.

## Answer to relevant Questions

(a) If the distance from a point sound source triples, the sound intensity will be (1) 3, (2) 1/3, (3) 9, (4) 1/9 times the original value. Why? (b) By how much must the distance from a point source be increased to reduce ...At Cape Canaveral, on blastoff a rocket produces an intensity level of 160 dB as measured 10 m from the rocket. What would be the intensity level at 100 m away? (Assume no energy is lost due to reflections, etc.) A rock band (with loud speakers) has an average intensity level of 110 dB at a distance of 15 m from the band. Assuming the sound is radiated equally over a hemisphere in front of the band, what is the total power output? What temperature change from 0oC would increase the speed of sound by 1.0%? A violinist tuning her instrument to a piano note of 264 Hz detects three beats per second. (a) The frequency of the violin could be (1) less than 264 Hz, (2) equal to 264 Hz, (3) greater than 264 Hz, (4) both (1) and (3). ...Post your question

0