You and some friends are at the park. You find some rope and decide you'd like to play a game of tug-of-war. Unfortunately, there are 5 people so you can't have an equal amount of people on each
side. One of your friends suggests that the two biggest people should be on one side, while the three
smaller people should be on the other side. what do you think is the best way to divide up your friends for the game?

What is work? how much work is done to move an object 0 meters?

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.

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point