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anonymous
 one year ago
A sonar pulse is sent to the ocean bottom at 25°C, and it takes 1.20 s for the echo to come back. How deep is the bottom?
0.90 km , 0.92 km , 1.79 km, or 1.84 km ?
anonymous
 one year ago
A sonar pulse is sent to the ocean bottom at 25°C, and it takes 1.20 s for the echo to come back. How deep is the bottom? 0.90 km , 0.92 km , 1.79 km, or 1.84 km ?

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1we have to know how much is the speed of sound inside a sea water

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1I found that value in my textbook: it is 1,460 m/sec

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh oops sorry i am drawing the table now :P dw:1433187822896:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1ok! ten we can pick 1,533 m/sec

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1so we can write: \[\Large 1.2 = \frac{{2d}}{{1533}}\] where d is the requested deepness, there the factro 2, is to take account that we are dealing with the echo

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok! and then we get this? 1839.6=2d d=919.8 ?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1d=919.8 meters= 0.92 Km (approximated value)
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