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01_24_Beats_Boundaries - The wave velocity on the light...

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Physics 212 1/24 HW Handout Name________________________ Spring 2003 Beats and Boundaries Due Wednesday 1/29 1) You have three tuning forks that are all different frequencies. Fork A’s frequency is 500Hz and Fork B’s is 512 Hz. Fork C’s frequency is unknown. When Fork A and C are sounded together a beat frequency of 4Hz is heard while a beat frequency of 8Hz occurs when B and C are sounded together. What is the frequency of fork C? Show your reasoning. 1) Reflection and transmission at a boundary. Two strings, heavy and light are joined and pulled tight. Various pulse shapes are sent along the string in either direction, then transmit through, and reflect from the boundary.
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Unformatted text preview: The wave velocity on the light string is twice that on the heavy string. You are given the shape and position of either the reflected or the transmitted pulse. Draw and label the shape and position of the other (transmitted or reflected) pulse at the same instant. You will need to think about and sketch the incoming pulse because the reflected may have been inverted. Do not concern yourself with amplitude. The first one is done as an example. Heavy end Light end reflected pulse transmitted pulse reflected pulse transmitted pulse transmitted pulse incoming pulse...
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