Which of the following most accurately describes liquid state sintering processes? O a. O b. 0 с. O d. The transport mechanism is viscous flow and diffusion. The transport mechanism is diffusion. The transport mechanism is evaporation and condensation. The transport mechanism is viscous flow and solution precipitation.

12. Cylindrical metallic parabolic solar thermal concentrator A. Does not rotate. B. It rotates around one axis only. C. It rotates around two axes only. D. The concentration ratio achieved is: 500-1000. E. The concentration ratio achieved is: 50-100. F. The concentration ratio achieved is: 10-50. * A + D only. B +E only. B + F only. O C + E only

The point in the phase diagram where the fusion curve, the vapor pressure curve, and the sublimation curve join is called the Question 4 options:   melting point.   critical point.   double point.   boiling point.   triple point.   A sample of an ideal gas is slowly compressed to one-half its original volume with no change in temperature. What happens to the average speed of the molecules in the sample? Question 5 options:   It doubles.   It halves.   cannot be determined without more information.   It quadruples.   It does not change.     Phase changes occur Question 6 options:   as the temperature decreases.   all of the above.   none of the above.   as the temperature remains the same.   as…