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The density of lead block is 11.5 g cm-3and it is floating in mercury of density...

The density of lead block is 11.5 g cm-3and it is floating in mercury of density 13.6 g cm-3.

(a) What portion of the lead block is immersed in mercury?

(b) What force needed to press the block immerse it totally if the mass of the lead block is 2 kg.

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