Making reference to one of the following smart materials, describe what effects post-production will have on their properties and behaviour in service:

piezoelectric crystal

magnetorheological

applied force
electric fields
magnetic fields
temperature change

Aswimmer is determined to cross a river that flows due south with a strong current. initially, the swimmer is on the west bank desiring to reach a camp directly across the river on the opposite bank. in which direction shoud the swimmer head? a. the swimmer should swim southeast. b. the swimmer should swim south. c. the swimmer shuold swim northeast. d. the swimmer should swim due north. e. the swimmer should swim due east.