Part B Use Internet research to determine the different engineering specializations required in the construction of a high-speed rail network Mention the different tasks performed by engineers Involved in such engineering projects.

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?