Acube of side 5.0m is in a region where the electric field is directed outward from both of two opposite cube faces, with uniform magnitude e0 over each of those two faces. no flux crosses the other four faces. how much charge is inside the cube?

The charge inside the cube is null.

Explanation:

If we apply the gauss theorem with a cubical gaussian surface of the size of the cube:

If we consider than the direction of the electric field is , we can solve the problem differentiating  the integral for each face of the cube:

E₀ is a constant and each surface is equal to each other, so:

Therefore:

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min