Boston College Sound Waves Ice Cream Truck Travels Problems
Question Description
I’m working on a physics multi-part question and need guidance to help me understand better.
An ice cream truck travels down a street at 5.00 m/s and plays a frequency of 420 Hz. A boy runs after the truck (in the same direction). The boy hears a note of frequency of 427 Hz.
- Is the boy catching up to the truck, or falling behind?
- At what speed is the boy running?
- When the boy is 18.0 m from the truck, the sound has a sound level of 68.0 dB. What is the power of the speaker on the truck?
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