Sound intensity, i, from a spherical source is a function of the distance, r, from the source of the sound. It is represented by the function uppercase i = startfraction uppercase p over 4 pi r squared endfraction where p is the power of the sound. Explain the behavior of the graph of i and what it means in context.

Loss in amenity , biodiversity , which are most difficult to assess

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.

Ithink