# Help with a problem of a Sphere!

1. Dec 1, 2007

We have a hollow Sphere. It weighs 240 newtons in the air, and 150 newtons when it's totally immersed in the water.

If the density of the metal is 7 g/cm^3. Find the metal thickness

thanks

Last edited: Dec 1, 2007
2. Dec 2, 2007

### Kurdt

Staff Emeritus
What have you tried so far?