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Homework Help: Types of Waves

  1. May 2, 2007 #1
    Hi! Could you please check my answers? Thanks!

    1. The problem statement, all variables and given/known data
    2. Relevant equations
    3. The attempt at a solution

    1. The time for one cycle of a periodic process is called the (Points: 1)
    period. <-------

    2. A mass is attached to a vertical spring and bobs up and down between points A and B. Where is the mass located when its potential energy is maximum? (Points: 1)
    at either A or B < --------
    midway between A and B
    one-fourth of the way between A and B
    none of the above.

    3. What happens to a simple pendulum's frequency if both its length and mass are increased? (Points: 1)
    It increases.
    It decreases. <----------
    It remains the same.
    It could remain the same, increase, or decrease; it depends on the length to mass ratio.

    4. For a wave, the frequency times the wavelength is the wave's (Points: 1)
    speed. <--------

    5. A 2.0 kg mass is attached to the end of a horizonal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.1 m. What is the total mechanical energy of this system? (Points: 1)
    0.020 J
    25 J <------- (5/(2x0.1)
    0.25 J
    1.0 J
  2. jcsd
  3. May 2, 2007 #2
    Actually it's ok you don't need to help. :)
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