A senstive computer is being transported in a boxcar. Accelerometer measurements tell us that at its normal speed, the foremost component of the boxcar's vertical acceleration is 10 m/s^2 at a frequency of 30 rad/sec. The crate in which the vase is being transported is tied to the floor of the boxcar. What is the required frequency ratio of an isolator with a damping ratio of 0.1 such that the acceleration amplitude of the 15 kg vase is less than 0.5 m/s^2

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.