What statement is true of AC current?

The material that keeps its new shape after it is stretched is called?

Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?

Describe the three ray tracing steps used to identify an image for the given situation.