A horizontal force is applied to a 214 lb cart that is on a level surface. The cart starts from rest. The force initially is 98 lbs, and decreases over 9.6 seconds to 0 lb. Determine the initial acceleration of the cart. Ignore air resistance and friction. (include units with answer) A: 14.7 ft/s^2 C: 14.75 ft/s^2 Hints: 0,0

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.

Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?

The statue of liberty is 305.5 feet high. when the angle of elevation of the sun is 50 , what is the distance to the tip of the shadow from a point at water level and directly below the highest point of the statue?