Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Watts and Power

  1. May 28, 2008 #1
    I have a 38 watt amp and I'm trying to figure the Power it produces, but I'm not sure how to find the Velocity. Can anyone clue me in on this?
    And I know to use the P=V^2/R

    And sorry if this is in the wrong forum, I'm new.


    EDIT: I just found V=f/Lw (velocity=frequency/wavelength) but how do I find the frequency and wavelength?
    Last edited: May 28, 2008
  2. jcsd
  3. May 28, 2008 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Go back to the source of your first equation:

    [tex] P = \frac {V^2} R [/tex]

    Find the meaning of each symbol, I'll bet that V is NOT velocity.
  4. May 28, 2008 #3
    Haha right.. sorry
  5. Jun 5, 2008 #4
    I'll bet your 38 watt amp provides 38 watts of power.... :P
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook