Identify the normal force on the shopping cart after 75 newtons of groceries are added to the cart

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

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.

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot