a PIC can turn a motor both ways buy commanding a relay (DPDT), the pic can chage which way around the moter is turning by the flow of the electricicty.
You can turn it both ways to see how sharp it is.
Car motors
you can arrange 8 pictures 28 different ways
Stop, look both ways, and then proceed if no vehicle is coming.
All electric motors are electromagnets.
Both ways but keeping it horizontal will prevent the disk to become scratched.
Motors are protected in two ways. Against a short circuit by fuses or breakers. Against overload by thermal overload heaters.
TURN YOUR KEY OFF. THEN TURN THE STEERING WHEEL - IT MAYBE HARD TO TURN THE WHEEL - USE BOTH HANDS AND TURN THE STEERING WHEEL BOTH WAYS. IT SHOULD UNLOCK THE WHEEL.
They are driven by electric motors or by compressed air
Ways a hypothesis can be supported is with pictures, explanations, or demostrate on the spot
There are many ways you can find the value of various motors. Most commonly, a simple Internet search will help indicate various values.
There are a few ways one could turn a picture into a gift. One could put the picture in a high quality frame, make it into a poster or montage. A series of pictures could be put into a photo album.