The index of refraction of halite, or rock salt, is 1.54. What is the speed of light in that mineral?

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

How would a small bar magnet be oriented when placed at position x?

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.