Assume that a 19 cm length of wire is carrying a current perpendicular to a 4.1 T magnetic field and experiences a force of 7.6 mN. what is the current in the wire? A) 3.4x10^-7 A
B) 9.8x10^3 A
C) 1.0x10^-2 A
D) 9.8 A

Orange juice has a lower or higher viscosity than chocolate syrup

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."

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.