Which of the following do waves carry?
a) matter
b) energy
c) matter and energy
d) the medium

Which of the following would not be taken into consideration when describing the quality of a sound

Explain vector addition, triangle method and parallelogram method

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.