Pressure of gas is 13.6 cm of hg what does it means

Which lists the organs in the correct order as food passes from the mouth to anus?

Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?