[O.04H]Which of these statements best describes the potential future impact of various technologies on the environment? The technology used in current power may alter the tides.
The technology used in ocean thermal power may help in navigation.
The technology used in wave power may alter the migration of whales.
The technology used in tidal power may help in the growth of marine life.

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?

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.