Which of these statements best explains why computer models and simulations are used to study severe weather? a. they reduce the strength of storms and hurricanes. b. they predict the damages of severe weather easily. c. they can force strong winds to blow in desired directions. d. they prevent severe weather conditions in a location.

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.