1.How many hours should it take an articulated wheel loader equipped with a 4 yd3 bucket to load 3,000 yd3 of gravel from a stockpile into rail cars if the average haul distance is 300 feet one way? The area is level with a rolling resistance factor of 120 lbs./ton. Job efficiency is estimated at 50 min./hour
2.Two towers A and B are located on flat ground and their bases have equal elevations above sea level. A person on tower A whose eye level is 26.0 feet above the ground can just see the top of tower B, which is 105 feet above the ground. How far apart are the towers?