1. The problem statement, all variables and given/known data Well, here's the homework question: A charge Q is located inside a rectangular box. The electric flux through each of the six surfaces of the box is: phi1=+1500Nm^2/C, phi2=+2200Nm^2/C, phi3=+4600Nm^2/C, phi4=-1800Nm^2/C, phi5=-3500Nm^2/C, and phi6=-3400Nm^2/C. What is Q? My guess is that I will have to use Gauss's law (electric flux = enclosed charge over electric constant) to find out the charge for each number and then find the mean of all the charges? But what's really confusing me is that Gauss's law's units don't seem to cancel out properly. Please show me why I'm an idiot. 2. Relevant equations seems like it should be ...why isn't it? 3. The attempt at a solution My attempt at a solution would be +1500 * 8.99E9 = 1.35E13 +2200 * 8.99E9 = 1.98E13 +4600 * 8.99E9 = 4.14E13 -1800 * 8.99E9 =-1.62E13 -3500 * 8.99E9 =-3.14E13 -3400 * 8.99E9 =-3.06E13 The mean of those numbers = -5.83E11 = Q?