Light passes from air into water at an angle of incidence of 42.3°. Determine the angle of refraction in the water.

How are calculation for velocity and speed different

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.