Consider a single crystal of some hypothetical metal that has a bcc crystal structure and is oriented such that a tensile stress is applied along a [1 2 1] direction. if slip occurs on a (1 0 1) plane in a [-1 1 1] direction, compute the stress at which the crystal yields if its critical resolved shear stress is 2.4 mpa. answer format: x. xx units: mpa

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.