1. A woman is walking westwards and pushing a baby in a pram at a constant velocity with force of 150 N and at an angle of 25° relevant to the horizontal. The weight of the baby and the pram is 300 N. Determine the normal force and the frictional force acting on the moving object.

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

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.

Most short-period comets do not have randomly oriented orbits because