480 c flows through a 12-gauge copper wire of diameter 5.00 mm and through a light bulb in 10 min. copper has 8.5 x 1028 free electrons per cubic meter. (a) what is the current density in the wire? (5 pts) (b) what is the drift velocity of an electron?

Contrast the force of gravity between these pairs of objects a 1 kg mass and a 2 kg mass that are 1 m apart and two 2 kg masses that are 1 m apart

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.