Recent content by custner

  1. C

    Max velocity of a vibrating loud speaker membrane given sound intensity

    I got a hint today that that solution should use conservation of energy, but I don't know how that helps
  2. C

    Max velocity of a vibrating loud speaker membrane given sound intensity

    I can't seem to edit the question again. But I think that the v_max I get is for the wave at 10 meters. So somehow I need to find the intensity at the membrane right? But using the formula I_1*r_1^2=I_2*r_2^2 with r_1=10 meters would give be I_2=infinity sine r_2=0, or am I missing something?
  3. C

    Max velocity of a vibrating loud speaker membrane given sound intensity

    My attempt: p and T allows us to calculate ##Z=402 \frac{kg}{sm^2}## using ## Z=p*\sqrt(\frac{\gamma*M}{R*T})## . The sound intensity level at 10 meters allows us to calculate the intensity at 10 meters to be I=10``````^{-7} W/m^2 using ##50 = 10*log(I/I_0)##. Then, using the formula...