Why does the constantly changing direction of the poles of the electromagnet cause it to spin?

Avalue that describes how heavy an object is and is related to the force of gravity is

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability

Road users moving into your lane, brake lights, and abrupt changes in road surface are a. rare at night b. indicators of potential hazards c. not worth worrying about before you reach them d. no problem for experienced drivers