A 10-kg shopping cart is rolling down the aisle at a rate of 2 m/s when it collides with a 20-kg shopping cart loaded with food that’s traveling in the same direction but at a rate of 1 m/s. If the first cart slows to 1.2 m/s after the collision, what is the speed of the 20-kg cart after the collision?

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

What occurs during a combustion reaction

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.