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IMDB rating: 3.90 Plot: Two boys make a pact to do something brave, crazy and dangerous. They will see their town one last time before a man-made lake floods it forever, burying it under the deep lake. Everyone’s been evacuated – just the church, the homes, the abandoned shops remain. Only the eerie buildings…still hiding secrets that no one suspects. The two boys walk through the doomed ghost town. But the boys discover that the town isn’t quite deserted. And they are trapped as a massive wall of water crashes down on the town. Time passes, and the whispered secrets of the town have been long forgotten. But now, fifty years after vanishing, the sunken town comes alive again. |
Actors: McKell Michael,Gordon Patrick,Manquina Manuel,Borras Ricard,Plensa Damia,Meca David,Castanon Carlos,Pou Josep Maria,Munoz Omar,Pasaglia Santiago,Horror,Mystery,Thriller,
a sound wave of wave length of 0.70m and velocity of 330m/sec is produced for 0.5sec…?
what is the frequency of the wave?
how many complete waves are emitted in this time interval?
after .50sec how far is the front of the wave from the source of the sound?
the speed sound in water is 1498m/s a solar signal is sent straight down from a ship at a oint just below the water surface and 1.8 sec later the reflected signal is detected . how deep is the ocean beneath the ship?
v=veolicty
f=frequency
l=wave length
first q:
v= fl
330=f(0.7)
f= 330/0.7
f= 471 Hz
therefore, 471waves are produced per second
(471)(0.5)=235.7
so around 235 COMPLETE waves were emitted.
(0.5)(330)=165
so the front of the wave was around 165 m from the source.
second q:
d=vt
d=(1498)(1.8)
=2696.4
BUT the sound travelled there and back (i’m assuming) so you have to divide the answer by two
2696.4/2=1348.2
so the ocean is 1348.2m deep
I HOPE I’M RIGHTTTTT! LET ME KNOW
i just finished from my physics exam on Wednesday
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