# L42 - RememberThisWeek Short CAPA this week...

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Remember This Week Short CAPA this week. Laboratory/Recitation: Reviews. Thirty minute FCI test. Also, a 30 question review of material constructed by Prof. Zimmerman. Print review problems and bring to recitation section. Those needing to make-up Labs 4-6: contact your TA immediately. Done during this week’s Lab/Recitation period. Lecture on Friday: overview of material for the Final Exam. To study for the Final Exam (WED MAY 5, 4:30-7:00): (1) Clicker questions on-line, (2) CAPA questions, (3) Extra problems from Giancoli, (4) Our three mid-terms, (5) Three mid-terms & ±nal from previous semester, (6) Prof. Zimmerman’s review. (7) Re-read Giancoli: our web-site lays out coverage. L42 M 4/26/10 1 Physics 2010

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Standing waves on a plucked string: emerge from waves traveling in both directions and reflecting at the ends of the string. v = f λ f 1 = v/ λ 1 = v/2L f n = v/ λ n = nv/2L = nf 1 L42 M 4/26/10 2 Physics 2010 You can change the pitch (frequency) of the sound emitted from a guitar (or a violin, etc) by reducing the length of the oscillating string:
L42 M 4/26/10 3 Physics 2010 For a flute (or other wind instruments), tube is open at both ends: air oscillates.

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L42 M 4/26/10 4 Physics 2010 For an organ pipe, tube is open at one end and closed at one end: air oscillates differently.
L42 M 4/26/10 Physics 2010 5 Temperature and Heat 1. Temperature scales: Ch. 13-2 2. Thermal expansion: Ch. 13-4 3. Heat as energy transfer: Ch. 14-1 4. SpeciFc heat, latent heat and calorimetry: Ch. 14-2 to 14-5 5. Ideal gas law: Ch. 13-7 to 13-9

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L42 M 4/26/10 Physics 2010 6 1. Temperature Scales Celsius or Centrigrade Scale 1742 Swedish astronomer Anders Celsius (1701–1744)
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L42 - RememberThisWeek Short CAPA this week...

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