Awire that is 0.36 meters long moves perpendicularly through a magnetic field at a speed of 0.21 meters/second. the induced emf produced in the wire is 0.45 volts. what is the magnetic field strength?

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.

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.