Homework Help: physics

Posted by Sarah on Sunday, November 7, 2010 at 10:57pm.

A rectangular block of ice 10 m on each side and 1.1 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3.

a) How high does the top of the ice block float above the water level?

m *
.116 OK

HELP: Use Archimedes' Priciple.

b) How many penguins of mass 27 kg each can stand on the ice block before they get their feet wet?

4 NO

HELP: Their feet will get wet if the ice block sinks below the water surface.

I tried (1025-917)/27=4 and it's not correct. I'm probably just missing something silly, but every other way I've tried it doesn't make any sense

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