The biggest school in the world is in Lucknow, India. It has more than 40,000 students and 2500 teachers! Would it be easier to make new friends in a school with 40,000 kids than a school with fewer than 100 kids?

Ahuge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. the upper face carries +95.0 nc/m2 while the lower face carries -25.0 nc/ m2. what is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ε0 = 8.85 × 10-12 c2/n · m2)