prob05 - The Physics of Light & Sound PROBLEM SET 5...

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Instructions Complete the following exercises in class on Monday, May 23. Feel free to work together in groups or to consult with your instructor. These exercises are for your bene±t and need not be turned in. Make sure you understand all of the material! 1. A pendulum swings back and forth. Explain physically why it returns approximately to the same point after each swing. 2. A pendulum is raised to 5 cm above the lowest point in its swing. What will be its speed when it reaches that lowest point? 5 cm v??? 3. Most grandfather clocks have a pendulum that ticks (makes half a swing) each second. What length of pendulum is required to produce this periodic motion? (g=9.8 m/s 2 ). 4. In reality, a pendulum will eventually damp and come to rest at its equilibrium position. Can you explain physically why this happens? 5. Medical applications of ultrasound use frequencies of up to 2 x 10 7 Hz. What is the wavelength of this frequency in air? Summer 2011
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This note was uploaded on 06/02/2011 for the course GSCI 121 taught by Professor Niculescu,m during the Spring '08 term at James Madison University.

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prob05 - The Physics of Light & Sound PROBLEM SET 5...

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