Michael faraday was one of the first scientists to experiment with motors. how did faraday design his first motor? a.) he brought a current-carrying coil of wire close to running water. b.) he rotated a magnet around a current-carrying wire dipped in boiling water. c.) he used energy from the sun to rotate a magnet. d.) he brought a magnet close to a current-carrying wire.

The correct option is D. 
Micheal Friday devised a wire which hanged down into a glass vessel that has a bar magnet secured at the bottom. He then filled the glass vessel with Mercury and connected the apparatus to a battery. This sent electricity through the wire, thus creating a magnetic field around it. This field interacted with the field around the magnet and cause the wire to rotate clock wisely.

Velocity is the speed of an object in a certain direction so you'd need to know speed and direction

Perpendicular to the wave motion