You are attempting to design an ambulance siren. You would like the siren to be distinct enough that it will be clearly audible in case of emergency, but not unnecessarily disruptive. to) Suppose that you would like to have a siren which is loud enough that its intensity will exceed that of typical street traffic (which has a sound level of 85 dB] by at least a factor of three for cars that are 300 m away from the siren source. However, you also do not want it to be so loud that it can cause hearing damage (caused by a sound level above 125 dB] for a bystander at a distance of 10 m from the siren source. What is the range that the power of the siren can take so that it is consistent with these requirements? {You may neglect dampingl'attenuation}. Maximum power: Minimum power: (b) Suppose that you perceive a sound level equal to :1: dB when you are situated 120 m from an ambulance siren. Annoyed by the sound of the siren, you start to walk in the opposite direction. How much further do you need to walk in order for the sound level to drop to x - 5 dB? 111 (c) Suppose an ambulance produces a sound level of 110 dB at a distance of 100 111. How many ambulances would need to be at the same position in order for the sound level at this distance {100 m} to exceed the threshold for hearing damage [125 dB}