Cuando salieron de clase fueron a la casa de Mario a hacer su proyecto de Ciencias, Jorge llego en 15 minutos y Mario en 20 minutos ¿Quién fue el más rápido? ¿Por qué?

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.

What is the increase in density of a medium due to wave travel?

Which of the following examples illustrates static friction? a box sits stationary on a ramp. a ball rolling on the lawn eventually comes to rest. a car rounds a curve on a road. a fish swims upstream.