Which will reduce the possible environmental damage associated with mining uranium? installing newer water recycling systems in older power plants
increasing the reprocessing of used fuel for reuse
building additional fission nuclear power plants
developing better places to store radioactive wastes

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.