Figure out the amount of time these devices would need to be in operation before 1 million Coulombs of charge passes through them:

a. LED night light (I = 0.0041 A)

b. Incandescent night light (I = 0.052 A)

c. 60 Watt Incandescent light bulb (I = 0.4 A)

d. Large kitchen light fixture (I = 2.1 A)

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

Disney, viacom and aol time warner are examples of

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.