Where is the intensity greater and by what factor: (1) at a point a distance R from a power source P, or (2) at a point a distance 2R from a power source of 2P? Explain.
Answer to relevant QuestionsThe Richter scale, used to measure the intensity level of earthquakes, is a logarithmic scale, as is the decibel scale. Why are such logarithmic scales used? A freshwater dolphin sends an ultrasonic sound to locate a prey. If the echo off the prey is received by the dolphin 0.12 s after being sent, how far is the prey from the dolphin? The speed of sound in air on a summer day is 350 m/s. What is the air temperature? (a) If the power of a sound source doubles, the intensity level at a certain distance from the source (1) increases, (2) exactly doubles, or (3) decreases. Why? (b) What are the intensity levels at a distance of 10 m from a ...If the distance to a sound source is halved, (a) Will the sound intensity level change by a factor of (1) 2, (2) 1/2, (3) 4, (4) 1/4, or (5) none of the preceding? Why? (b) What is the change in the sound intensity level?
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