Friday

November 28, 2014

November 28, 2014

Posted by **Z32** on Friday, August 27, 2010 at 12:27am.

- Physics -
**drwls**, Friday, August 27, 2010 at 5:47amTo have the same weight and mass, the product of Radius^3 and density must be the same for the aluminum and iron spheres.

Let subscript 1 be Al and subscript 2 be iron.

R1^3*(density1) = R2^3*(density2)

(R1/R2)^3 = 7.86/2.70 = 2.911

R1/R2 = cube root of 2.911 = 1.428

R1 = 1.40*1.428 = 2.00 meters

(using three significnant figures)

**Answer this Question**

**Related Questions**

math - One cubic meter (1.00 m3) of aluminum has a mass of 2.70E+3kg, and 1.00m3...

chemistry - I have two problems that I'm stumped on. I know the correct anwers ...

Physics - One cubic meter of granite has a mass of 2.70E3 kg, and one cubic ...

physics... - T^2=((4pi^2)/(GM_E))r^3 Substitute the period in seconds, T = 86,...

physics/chem - the density of alumnium is 2.7 g/cm^3 and its molar mass is 27 g/...

Math! Help! Help! Help! - Hello a compound with: density of: .80 g/cm^(3) volume...

science - A proton (mass m = 1.67 multiplied by 10-27 kg) is being accelerated ...

physics -- fluid mechanics - Neutron stars consist only of neutrons and have ...

physics - A granite column in a building is 8.50 m high and has a mass of 2.16 ...

physics - A freight train has a mass of 1.7 multiplied by 107 kg. If the ...