When light passes from a slower medium into a faster medium, which of the following explains what will occur? A. Light will not be refracted.
B. Light will be refracted toward a line drawn perpendicular to the point of refraction.
C. Light will be refracted away from a line drawn perpendicular to the point of refraction.

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

With i really need the correct answer!

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).