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Home >All Categories > Science & Mathematics >Physics >Open Question Pat Member since:April 11, 2011Total points:95 (Level 1)An ambulance is moving towards a doctor to deliver a sick patient. The ambulance siren has a frequency of 489 Hz and a velocity of 31 m/s. The speed of the doctor running towards the ambulance is 5 m/s. If the speed of sound is in air that day is determined to be 340 m/s, what is the frequency of the sound heard by the doctor?Answer Question

by Buffalo Bob Member since:March 14, 2011Total points:381 (Level 2)Look up "doppler effect" on wikipedia, you will find the answer there

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for the harmonic motion of the trigonometric function, find a) maximum displacement, b.) the frequency and c.) the least positive value of t for which d=0

1.) d = 1/2 cos20pi t

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Given the histogram below, create a grouped frequency distribution

http://www.flickr.com/photos/60384569@N07/5536232456/

Please someone review and get back to me. Thanks/

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Home >All Categories > Science & Mathematics >Physics >Open Question Ralph Member since:March 15, 2011Total points:80 (Level 1)A uniform narrow tube 1.80m long is open at both ends. It resonates at two successive harmonics of frequencies 305Hz and 366Hz. What is the fundamental frequency? What is the speed of sound in the gas in the tube?
Thanks in advance for the help!
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