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A diver together with his diving suit and equipment has a mass of 90 kg. If...

A diver together with his diving suit and equipment has a mass of 90 kg. If he wants to float fully submerged in water, he must carry 3 kg of lead ballast. How many kg of lead ballast will he have to carry if he wants to float in seawater with a density of 1025 kg/m3? The density of lead is 11300 kg/m3.

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