A50-mm-diameter ball is pressed against an identical ball of same material (e= 200 gpa) by a force of 500 n. calculate (a) the radius of the contact area; (b) the maximum contact pressure and (c) the relative displacement of the centers of the balls.

What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?

Arigid tank contains 10 kg of air at 137 kpa (abs) and 21°c. more air is added to the tank until the pressure and temperature rise to 242 kpa (abs) and 32°c, respectively. determine the amount of air added to the tank. [r-0.287 kj/kg k]

The power source in a certain welding setup generates 3500w that is transferred to the low carbon steel work with a heat transfer factor of 0.85. the melting factor in the operation is 0.45. a continuous fillet weld is to be made with a cross-sectional area of 23 mm2 determine the travel speed at which the welding can be accomplished.