Conceptual Physics (12th Edition)

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

Chapter 13 - Think and Explain: 71

Answer

Mercury is almost twice as dense as iron (page 230). A solid block of iron will displace its weight in mercury before it is completely immersed, and therefore can float in mercury. In water, it sinks because a solid block of iron cannot displace its weight in water. (However, a hollowed out block of iron can float in water - we call that a ship.)
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.