The student uses the same angle of incidence, 70°, for both the red and the green light. Find the angle of refraction for the red light. Reminder of values:
Refractive index of opal with red light 1.37
Refractive index of opal with green light 1.45

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

Place me with this question is my last question