1. The problem statement, all variables and given/known data A light ray enters a rectangular block of plastic at an angle 1 = 44.0° and emerges at an angle 2 = 79.0°, as shown in Figure P22.61. Figure P22.61 (a) Determine the index of refraction of the plastic. wrong check mark (b) If the light ray enters the plastic at a point L = 50.0 cm from the bottom edge, how long does it take the light ray to travel through the plastic? ns 2. Relevant equations n1sin(1)=n2sin(2) or sin(critical)=n2/n1 3. The attempt at a solution i attempted arcsin(11/44) and arcsine(79/44) but both were wrong. Can someone please help me get on the right path?