lecture15_th3_4

lecture15_th3_4 - Clicker question If I put solar panels on...

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If I put solar panels on my house, what should I do to collect the most energy from the sun? A.Make the area of the solar panels large. B.Make the area of the solar panels small. C.It doesn’t matter how big the area of the solar panels is, I’ll always get the same amount of energy. Clicker question A B
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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: Sound intensity and loudness. TODAY: Decibels. NEXT TIME: More on decibels, ears, hearing. READ : 5.5 (can skip 1st part of 5.5, (p. 83) about amplitudes.) To get ahead - 6.1 Don’t try to memorize - just think about the physics of the important pieces of your ear. • Homework 6 and Reading Question 7 due tonight; HW 7 and RQ 8 due next Thursday. • I’ll be out of town next week. – Professor Murray Holland will lecture. Phys 1240: Sound and Music
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We measure the pressure due to a sound wave at two nearby points, A and B. How do the pressures at point A and point B compare? A.Higher pressure at A B.Higher pressure at B C.Same pressure at A and B Clicker question A B
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Pressure at nearby points • PhET simulation on wave interference
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Pressure and Force • Pressure is the same at nearby points. • Force = Pressure * Area gets larger if the area measured gets larger.
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lecture15_th3_4 - Clicker question If I put solar panels on...

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