8.2 Discussion of the Poynting vector in the above problem This is a continuation of the previous problem. 1. Calculate the Poynting vector at a distance r < rp, and integrate it over the surface of the cylindrical region where it exists in order to find an algebraic expression for the rate at which energy flows into the volume inside r < rp. Write this power as a function of the current that is flowing in the wire, I(t), the potential difference V (t)

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

Which of the following is an example of units for speed

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.