Kyle lays a mirror flat on the floor and aims a laser at the mirror. the laser beam reflects off the mirror and strikes an adjacent wall. the plane of the incident and reflected beams is perpendicular to the wall. the beam from the laser strikes the mirror at a distance a=66.9 cm from the wall. the reflected beam strikes the wall at a height b=37.3 cm above the surface of the mirror. find the angle of incidence θi at which the laser beam strikes the mirror.
the answer is ampere
the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.
going in opposite directions