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 area 1.65 km2 and height 740 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 ✕ 106 n/c. he asks you to do a quick calculation of the charge on the cloud-ground capacitor (in c), so you can know what to expect if there is a bolt of lightning.

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Abird sitting high in a tree is an example of what type of wnergy

For problems 1-3, consider a simple dc brush motor with a permanent magnet stator. with an an consider a simple dc brush motor with a permanent magnet ae supply voltage of 100 v, the no-load speed of the motor is 1000 rpm. this motor can provide a torque of 1.9 n-m at 800 rpm drawing a current of 2 a current are both zero at no load.) 1. with an armature supply voltage of 100 v, the motor is operated at 900 rpm. what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input? what is the energy efficiency of the motor? with an armature supply voltage of 100 v, the motor is operated at 1100 rpm (where it acts as a generator). what torque input is required? what mechanical power is required what current is generated? what is the electrical power generated? what is the energy efficiency of the motor acting as a generator? 2. with an armature supply voltage raised to 120 v, the motor is operated at 1000 rpm. what is the no-load speed? what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input what is the energy efficiency of the motor? 3.