Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Add question

You must login to ask question .

Login

Register Now

Lorem ipsum dolor sit amet, consectetur adipiscing elit.Morbi adipiscing gravdio, sit amet suscipit risus ultrices eu.Fusce viverra neque at purus laoreet consequa.Vivamus vulputate posuere nisl quis consequat.

Time Elapse

The back wall of an auditorium is 28.0 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?

The speed of sound in the air is 343 m/s.


1/2 of this auditorium = 14 m

1s———-343————-1s

=28/343

= .082 s

= 8.16 x 10-2 s

About Vita

Comment ( 1 )

  1. 272My exfe/y-riendofribnd is thinking of joining the marines. I don’t feel too strongly about his choice, but I will support him although I do not think he qualifies to join. He is suffering from depression and is going to counseling for it. He was taking medication but he took himself off of it cold turkey. He still struggles with depression even though he won’t tell anyone. He also has a heart condition called syncope (sp?) And he gets light headed and dizzy frequently and has fainted from it. Does he qualify? I don’t want him to join and then be turned away.

Leave a reply