{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

S11_Practice_midterm_1

S11_Practice_midterm_1 - Physics 1B Spring 2011 Practice...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Physics 1B – Spring 2011: Practice Midterm 1 Problem 1: Consider two speakers, both on the y-axis, separated by a distance d=2 meters, and with the bottom speaker at the origin. Each speaker emits the same sound wave, in phase, with frequency f 0 = 514 Hz. a) Determine which on the positive x-axis will exhibit constructive and destructive interference b) The top speaker is now removed, and a moving reflecting surface is placed to the right of the remaining speaker and is moved toward it with speed v surface =2 m/s. What frequency would a listener standing at the location of the speaker hear reflected back from the moving surface?
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Problem 2: This problem walks you through a derivation of standing waves produced by two speakers. You will need the angle addition formula for cosines: cos(a+b) = cos(a)cos(b) - sin(a)sin(b) a) Consider two speakers on the x-axis a distance D apart from each other. Each emits a wave with the same wavelength, frequency, and phase (you can take the phase to be 0) in all directions.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern