Two flat mirrors connected so that their mirror surfaces form an angle of 90°. A light ray incident on one of the mirror surfaces with an angle of 0°, 23° with respect to the mirror's normal. The light ray then reflects off of both mirrors as shown. What is the reflected angle (θ) with respect to the normal of the end mirror?
In the AC circuit shown below, the power supply voltage is described by the equation Vc = 89 sin(377t). What is the current through the 40 Ω resistor?