The teharians want to build another bridge next to the golden great bridge. in the spring, it would have the same length as the golden great bridge. however, in the summer, it should increase its length by 2.30 m. what substance should be used to build the new bridge

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.