1382

Written Assignment 6

 

 

1.      In your own words, explain the meaning of the following terms:

 

a.       Transverse waves

b.      Longitudinal waves

c.       Standing waves

d.      Shock waves –

 

3.                  A person in a cave emits a sound and receives an echo 2.5 seconds later. How far is that person away from the wall?



4.                  Why do soldiers break step in marching over a bridge?


5.                  Jet aircraft mechanics wearing ear protectors



are able to converse with each other because the ear protectors block out the sound of the jet engine. What physics concept would account for this?



 

6.                  Suppose you call your dog with an average intensity level of 80 decibels (db). How much more sound energy would you have to put into each call to:


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