A large stone block is to be part of a harbour wall. The block is supported beneath the surface of the sea by a cable from a crane. Fig 2.1 shows the block with its top face a distance h beneath the surface of the sea.
The force acting downwards on the top face of the block, due to the atmosphere and the depth h of water, is 3.5 × 10⁴N.
a) The top of the block has an area of 0.25m².
i) a Calculate the pressure on the top face of the block.
ii) The atmospheric pressure is 1.0 × 10⁵ Pa.
Calculate the pressure on the top face of the block due to the depth h of water.
iii) The density of sea water is 1020kg/m³.
Calculate the depth h.
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Answered by
1
Answer:
a the top of the block downwards 1.0290 .
Answered by
3
Answer:
Explanation:
(i)3.5 * 10^4N / 0.25m^2 = 140Nm^2
(ii) 1.0 * 10^5Pa / 0.25m^2
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