What is Question 5 and 6 for this figure on the Mechanical Process Lab ?

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid

What are the major differences between injection molding and extrusion?