When you walk across a nylon rug and then touch a large metal ob￾ject, you may get a spark and a shock. What causes this to happen?

You have been hired by a "storm chaser" as an assistant. This individual loves to find locations at which tornadoes and violent lightning storms are occurring. While there, he takes photographs and makes electromagnetic measurements. You are on a chase with him to a lightning storm in Florida. He explains to you that a cloud layer and the ground can be considered as the plates of a capacitor that stores charge, with the ground being charged negatively. The capacitor continuously leaks charge due to the free charges in the air between the plates. In thunderclouds, however, various processes result in charge distributions that eventually lead to lightning, a phenomenon that delivers negative charge to the ground. Therefore, the lightning recharges the capacitor. Ahead of you is a cloud layer that the storm chaser measures to be of a 1.15 km² and height 17 km above the ground. He then uses a special apparatus called a field mill to measure that the electric field under the cloud is 4.00 x…

9. In a dielectric medium with = 4, the electric field intensity is given by Ē=(x² +22)ã, +x²a,-(y+z)a.. The electrostatic energy stored in the region -I≤x≤ 1,0 ≤ y ≤ 2,05 zs 3 is

Suppose Q = 2 nC, like the other two charges. If the assembly of identical charges is released from rest, what kinetic energy will each charge have after they all fly apart to infinity? 1 cm, 2 nC (+ ( 2.4 u O 36uJ O 1.2uJ O72uJ + 60° 60% 60% 1 cm 1 cm +) 2 nC