1. The 100kg astronaut is on the surface of the moon. The moon has an acceleration due to gravity of 1.62 m/s2. What is his weight?

The differences between  a compression wave and a transverse wave?

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.

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same