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1. The siren of a firetruck has a frequency of 1.20 KHz. When the firetruck is...

1. The siren of a firetruck has a frequency of 1.20 KHz. When the firetruck is stationary, the intensity of the siren 10.0 m from the truck is 3.50X10-4 W/m^2. Find the intensity of the siren heard by a bystander 25.0 m from the siren

2. The siren of a firetruck has a frequency of 1.20 KHz. When the firetruck is moving at 24.6 m/s east, what frequency is heard by someone in a car traveling 4.47 m/s east toward the fire truck. The temperature is 30.0C.

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