In a laboratory experiment, an ultrasound detector located at d is used to measure the distances of two moving objects, p and q. at a certain moment, p and q are located as shown in the diagram. what is distance pq? . a) 6.82. b)5.66. c)4.74. d)4.24. e)3.89.

What is created when solids, liquids, an gases mix with one another

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?

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.