In the earth's atmosphere positive charges move toward the earth and negative charges moves away from it the total current is approximately 1800 Amp. The average value of the electric field responsible for this current near the surface of the earth is 100N/C.
Determine the resistivity of the air at the surface of the earth? The radius of the earth is 6.37 x 10^6 meter.
Every year the Earth travels about 109 kilometer as it orbits the Sun. Determine the Earth average speed?
in km/h