AQ5. What is a car’s speed in m/s if it travels: Remember to write the speed number WITH the correct unit. a.5 meters in 0.1 seconds?

b. 5 meters in 0.2 seconds?

c. 10 meters in 0.2 seconds?

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.

The mantle is made up of which structural zones?

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?