scrapers are used to haul dirt from a borrow pit to the cap of a landfill. the estimated cycle time for the scrapers is 9.5 minutes. The scrapers carry 10 cubic yards of soil per trip . using a system efficiency of 45 minutes per hour and producitivity factor of determine the number of labor hours to haul 1 cubic yard of dirt. each scraper require one operator

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?