Building codes usually limit the current carried by a no. 14 copper wire to 15 a. many household circuits are wired with this size wire. what is the drift velocity of the electrons in this case? the diameter of no. 14 wire is 1.6 mm. assume one conduction electron per atom in copper. the atomic weight of copper is 63.3 and its density is 8900 kg/m3.4.89 x 10-5 m/s4.56 x 10-4 m/s5.52 x 10-4 m/s4.44 x 10-2 m/s1.65 x 10-3 m/s

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s