Which hypothesis describes the behavior of molecules when a substance changes from a gas to a liquid? Your The average speed of the molecules increases, because they have lower energy in the liquid state. The average speed of the molecules decreases, because they have lower energy in the liquid state. The average speed of the molecules decreases, because they have higher energy in the liquid state. The average speed of the molecules increases, because they have higher energy in the liquid state.
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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.
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Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?
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Which hypothesis describes the behavior of molecules when a substance changes from a gas to a liquid...
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