People in the united states know that water boils at 212 degrees fahrenheit. in europe, people know that water boils at 100 degrees celsius. is the water in the u. s. different than the water in europe? what explains the two different temperatures

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.