1. The problem statement, all variables and given/known data 1.Two identical spheres whose centers are 2.0m apart attracts each other with a force of 1.0x10 to the -5 power N. Find the mass of each sphere. 2.A pipe whose inside diameter is 30mm is connected to three smaller pipes whose diameters are 15mm each. If the liquid speed in the larger pipe is 1m/s, what is its speed in the smaller pipes. 2. Relevant equations None? 3. The attempt at a solution F = [G(Mm)]/R Can anyone please change this formula into M=??? And I don't really know the formula for the second problem. And future thanks.