In lightning storms, the potential difference between the Earth and the bottom of the thunderclouds can be as high as 50 MV. The bottoms of the thunderclouds are typically 1.0 mile above the Earth, and can have an area of 25 mi^2. If we model the Earth-cloud system as a huge capacitor, what are the capacitance of the Earth-cloud system, the charge stored in the "capacitor", and the energy stored in the "capacitor"?