please write a full solution to this question on a piece of paper and upload your answer back hereif a space station being constructed to rotate has a radius of 42.5m，how many tiomes per minute would it need to rotate to produce an artificial gravitational field that is 40% of Earth's gravitational field？

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.