Posted by **Alona** on Monday, December 6, 2010 at 11:22am.

Will a 7.25 kg ball with a diamter of 22 cm float in water? I know that the radius is 11 cm and that the density of water is 1000kg/m^3 and I got that it will float but it just doesn't sound right. Could anyone help please?

- physics (easy) -
**drwls**, Monday, December 6, 2010 at 11:59am
Calculate the mass of a 11 cm radius sphere of water.

(4/3) pi r^3 = 16,726 cm^3 = 1.672*10^-2 m^3

Mass (if H2O) = 16.726 kg

The ball is lighter than water and will float.

You could have also just calculated the density of the actual ball, which is 7250 g/16,726 cm^3 = 0.433 g/cm^3. Water's density is 1.00 g/cm^3

## Answer this Question

## Related Questions

- physics - A solid ball with a mass m=0.53kg floats in a tank of water.The ball ...
- Physics - The mass of the float is 50.0 kh and it has a volume of 1.0 m^3.det ...
- physics - a ball of mass of 4kg,of density 4000kg/m3 is completely immersed in ...
- science - 1) what is the mass of 10 cc of water? 2) why does a block of wood ...
- Mechnical principles - Mtal block weighs 500g in air and 446g completely ...
- chemistry - Sodium metal adopts a body-centered cubic structure with a density ...
- chemistry - Sodium metal adopts a body-centered cubic structure with a density ...
- Physics - A bucket is filled with a combination of water (density 1,000 kg/m3) ...
- physics - A solid ball with a mass m = 0.53 kg floats in a tank of water. The ...
- PHYSICS - A solid ball with a mass m = 0.53 kg floats in a tank of water. The ...

More Related Questions