On a hot summer day, a student turns his ceiling fan on when he leaves his room in the morning. When he returns in the evening, he finds his room to be of the same temperature as the neighboring rooms because no extra energy was added to the room air. Why? Assume that all the doors and windows are kept closed.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.

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?