Quelle est LA diferance entre les particules du gaz et du particules solides ​

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Ways that industry and agriculture use physical properties to separate substances

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.