1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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. :)
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?