A solid copper sphere will sink in water while a hollow copper sphere of the same mass may float. Explain this observation

Answer:

-Solid copper is denser than water while hollow copper sphere is less denser since its volume is bigger hence solid sphere sinks.
- Volume of water displaced by the solid sphere is little, may not offer enough upthrust force therefore it sinks.
- Hollow sphere must have greater volume, volume of water displaced is high therefore offers greater upthrust force that makes it float.

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