Question: 1 7 . ( 3 0 points ) The sound level measured 3 0 m from a single jet engine is 1 4 0 dB

17.(30 points) The sound level measured 30 m from a single jet engine is 140 dB .
a) Find the sound level at 300 m from a single jet engine. (Ignore reflections from the ground and nearby objects.)
b) Find the sound intensity at 300 m from a single jet engine. (Ignore reflections from the ground and nearby objects.)
c) Find the sound level at 300 m from four jet engines. (Ignore reflections from the ground and nearby objects.)

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