Question 21 of 33 A wave with a wavelength of 4.0 m moves with a speed of 2.0 m/s. What is
the frequency of the wave?
A. 8.0 Hz
B. 6.0 Hz
C. 0.5 Hz
D. 2.0 Hz

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.