A bar magnet is divided in two pieces. Which of the following statements is true?
A) The bar magnet is demagnetized.
B) The magnetic field of each separated piece becomes stronger.
C) The magnetic poles are separated.
D)Two new bar magnets are created.
E) The electric field is created

A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped

From the perspective of an employee that effective channeling of work related information and concerns

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.