When a potential difference of 154 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of 29.0 nC/cm2. What is the spacing between the plates?

Which instrument is used to measure air temperature

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 law of the conservation of momentum says that the total momentum of any closed and isolated system cannot