Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 13 - Think and Explain: 69

Answer

Your friend needs to further explain that a smaller volume of displaced saltwater is able to match the weight of the floating body. Therefore the body floats "higher" in saltwater. It would be even easier to float in a pool of mercury - a small fraction of your immersed body could displace a volume of mercury that weighs as much as you do.
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