The critical angle in air for a particular type of glass is 39.0°. What is the speed of light in this class glass? (c = 3.00 × 108 m/s) The critical angle in air for a particular type of glass is 39.0°. What is the speed of light in this class glass? (c = 3.00 × 108 m/s) 1.91 × 108 m/s 1.89 × 108 m/s 2.00 × 108 m/s 1.94 × 108 m/s 1.97 × 108 m/s

speed of light in glass ≈ 1.89*

Explanation:

refractive index (n) =            .......................equation 1

refractive index (n) = velocity of light in air/ velocity of light in medium  ....equ2

equate equation 1 and two;

speed of light in glass = c*sinC

                            =°

speed of light in glass = 188,796,117.314 m/s

speed of light in glass ≈ 1.89*

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.