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How much pressure is there at the bottom of the Marinas trench?

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Masonthomas | 12:48 Tue 28th Dec 2010 | Science
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If I had 3 1 foot cubes of steel aluminium and gold would the pressure alter the state of any of these cubes? If so how much by?
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About 1100 bar (or about 8-9 tons per square inch)

If your cubes where solid I can't see there being any change in them as they pressure would be equal from all sides and you can't generally compress solid objects.
Bulk modulus - http://en.wikipedia.org/wiki/Bulk_modulus

Pressure at 11000 metres (deepest ocean) 0.1086Gpa
http://en.wikipedia.org/wiki/Mariana_Trench

Resulting decrease in volume / increase in density (less than one percent)

Gold (180Gpa) ~ 0.06%
Steel (160Gpa) ~ 0.068%
Aluminum (76Gpa) ~ 0.143%

All information within this post provided at no cost to the viewer and (as always) open to challenge. Poster furthermore relinquishes all responsibility and accepts no liability for consequences from the voluntary use of this information in whole or in part.
^ Well that last part is particularly reassuring. Thanks.
Basically it all amounts to a (self)-educated guess derived from research to satisfy my own curiosity, posted in the hope it might contain some information of interest to someone else.
A word of advise to anyone predisposed to simply take my word of it; be afraid . . . be very afraid! ;o)
So Masonthomas, your gold bars should be ok if you bury them under your new house.....

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