Question

18. Which of the above substances, balloon full of air or wood, if placed at the bottom of a tank of
water, would rise to the surface?
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Answer 1

Will the same ship float higher in salt water than in freshwater? Explain your answer. The buoyant force is equal to the weight of the fluid displaced. ... Since the density of salt water is higher than that of fresh water, less salt water will be displaced, and the ship will float higher.