{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HWK41s_G11 - means The wave travels a distance of 20 m each...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
HWK 41 (11th grade) (SOLUTIONS) (due 5/09/07) Read chp. 25 sections 9 through 11 Do: 15, 30, 31, 35 15. When a wave source moves towards a receiver, the receiver encounters an increase in frequency, not wave speed. The relative movement causes the receiver to see the wave as being compressed into one of higher frequency with smaller wavelength, and no change in speed. 30. The wave vibrates up and down twice (i.e. two cycles) each second (i.e. per second), so its frequency is 2 cycles/sec, or 2 Hz. (Notice, no calculation was needed here, but you do need to know what frequency
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: means.) The wave travels a distance of 20 m each second, so its speed is 20 m/s . (Again, no calculation is needed here, but you do need to know what the speed of a wave means.) 31. One side of the sun (the bluer point A) is moving towards us relative to the other side (the redder point B). So the sun is rotating. 35. A subsonic aircraft moves slower than the sound waves it emits. As a result, the amplitudes of these emitted waves can’t get compressed into an intense ”boom” in which the amplitudes are heard at one time. 1...
View Full 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