• For a building, 5 meters compute the time required for the ball to fall to the ground while experiencing acceleration due to
gravity (g=9.8m/s2).
• How fast was the ball traveling when it hit the ground?

What type of nuclear decay causes the atomic number of an element to increase by 1?

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.

What causes the formation of ocean currents?