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May 6, 2016

# Homework Help: Physic

Posted by Jimmy on Sunday, November 8, 2009 at 2:41am.

The back wall of an auditorium is 29.0 m from the stage. If you are seated in the middle row, how much time elapses between a sound from the stage reaching your ear directly and the same sound reaching your ear after reflecting from the back wall?
• Physic - drwls, Sunday, November 8, 2009 at 4:16am

0.29 m divided by the speed of sound.

You are 14.5 m from the stage and back wall. The reflected wave from the back must make a round trip of 0.29 m before reaching you.

• Physic - AP, Sunday, November 8, 2009 at 2:34pm

what is the speed of the sound

• Physic - drwls, Sunday, November 8, 2009 at 5:10pm

About 340 m/s in air at room temperature. If you are studying acoustics, you should know it by now.

The subject is physics, not physic. Physic has another meaning.

• Physic - Jimmy, Sunday, November 8, 2009 at 5:28pm

i am not learning acoustics...but physics..sorry for the mis-spelling...i am sorry but i dont understand your approach