1. Two large metal sheets having surface charge density +o and -o are kept parallel to each other at a small separation distance d. The electric field at any point in the region between the plates is ?

Which accurately compares concave and convex lenses?

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?