PLEASE HURRY ILL MARK YOU BRAINLIEST IF YOU HURRY! The chart shows data for four heat engines. A 3 column table with 4 rows. The first column is labeled heat engine with entries W, X, Y, Z. The second column is labeled T Subscript h Baseline in Kelvin with entries 620, 840, 900, 500. The last column is labeled T Subscript c Baseline in Kelvin with entries 120, 100, 300, 25. Which lists the engines from most efficient to least efficient? Y, X, W, Z Z, W, X, Y Z, X, W, Y Y, W, X, Z

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.