lecture14_tu3_2

lecture14_tu3_2 - Clicker question The picture below shows...

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The picture below shows a traveling object that is emitting a sound. There is a person at point A and a person at point B. A B Who hears the higher pitch? A) Person A B) Person B C) They hear the same pitch Clicker question
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Phys 1240: Sound and Music Reminder: lecture attendance is not required. If you do attend, please create a good learning environment! Please opt-in to reduce distractions: Turn off cell phones Put away laptops Put away newspapers or other reading Stop side conversations Don’t leave in last 5 minutes of class
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www.colorado.edu/physics/phys1240 LAST TIME: Outdoor sound, Doppler shift. TODAY: Sound intensity and loudness. NEXT TIME: Decibels. READ : Ch 5.4 • Homework 6 and Reading Question 7 due Thursday. Phys 1240: Sound and Music
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Describing sound strength Amplitude tells you “overpressure” => extra force/area Can be very useful… But sometimes we are more interested in something else… position,x pressure (above normal) Amplitude: wavelength: (below normal)
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Which sound is louder? a) The one on the left b) The one on the right c) They are the same strength d) You can’t tell Over Pressure (N/m 2 ) Time (s) Time (s) Clicker question
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lecture14_tu3_2 - Clicker question The picture below shows...

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