Name: Anonymous 2007-03-05 12:47 ID:wZJreYwX
We're doing an experiment in physics (12th grade physics ;_;) to measure the speed of sound. We get a long cardboard tube, plug off one end, and set a microphone at the other. Then we clap and see how long it takes for the sound to reach the microphone, travel through the tube, and have the echo to reach the microphone again. We did this and divided the change in time between when the sound was detected and when it was returned by the length of cardboard tube to find velocity.
When the cap on one side is removed, however, the sound still echoes back; and it comes back in the same amount of time. What causes it to do so?
When the cap on one side is removed, however, the sound still echoes back; and it comes back in the same amount of time. What causes it to do so?