Acylindrical wire of radius 1 mm is made of copper metal. assume that each copper atom in metallic copper has one mobile electron free to move and carry current. if one amp of current is flowing through this wire, a. what is the average drift speed of the electrons? (units m/s). b. how long would it take for an electron to drift through 100 meters of such wire?

The material that keeps its new shape after it is stretched is called?

Which subatomic particle has a negative charge

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.