The wave frequency is where 1 hertz equals 1 wave passed a fixed point in 1 second.
assume that 10 waves pass a fixed point in 5 seconds. what is the frequency of the waves in hertz?

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Which type of basaltic lava flow has a fairly smooth

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.