Solve the all parts of given problem:
Problem: A 125-kg sled is dragged by a team of dogs a distance of 2 km over a horizontal surface at a constant velocity. If the coefficient of friction between the sled and the snow is 0.15,
Part A: Find the work done by the team of dogs?
Part B: Find the energy lost due to friction?
Please show all work and steps to determine the work done by the team of dogs.