|Aug19-10, 06:47 PM||#1|
Help on conversion with mass involved
1. The problem statement, all variables and given/known data
Grains of fine California beach sand are approximately spheres with an average radius of 45 Ám and are made of silicon dioxide. A solid cube of silicon dioxide with a volume of 1.00 m3 has a mass of 2600 kg. What mass of sand grains would have a total surface area (the total area of all the individual spheres) equal to the surface area of a cube 1.50 m on an edge?
answer is in kg
2. Relevant equations
volume of sphere=4/3*pi*r^3
3. The attempt at a solution
|Aug20-10, 08:54 PM||#2|
What is the density of the Silicon dioxide?
What is the surface area of 1 sphere?
|conversion, physic, physic help, physics|
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