Answer Happy

3. You decide to create your own musical instrument using the principles of open air columns. You research the concept of Boomwhackers discovering that you can produce musical notes by cutting lengths of pipe to certain lengths to produce fundamental overtones. Your tubes in a room with a controlled temperature of 20°C. What length of tube must you cut if the fundamental tone of the open pipe is middle C (262 Hz)? Experimenting further, you discover that if you strike the "middle C" tube while putting a cap on one end, you can produce a different note. What is the frequency of your new note? 4. 5. Bob wants you to experiment with the Doppler Effect. Being a musician, she has a keen ear and is able to detect musical pitches and can tell you the frequency that she hears with great frequency. She asks you to stay stationary and play your improvised "middle C" Boomwhacker as she bikes past. The temperature outside is 30°C. You strike the Boomwhacker and Bob reports that she hears a frequency of 280 Hz as she bikes towards you. What is Bob's speed on the bike?