Monday Homework Problem $14\mathrm{.}10$ A material has a critical angle of $47$ when immersed in water nwater $=4/3.$ What is the speed of light in this material? Select One of the Following: $($a$)3108$ m s $($b$)2\mathrm{.}1108$ m s $.($c$)1\mathrm{.}6108$ m s $.($d$)2,25107$ m s $.($e$)$ Toby