Determine the maximum hauling production given the following conditions. as many scrapers as required can be used, but only one push tractor will be available. the material is a sandy clay (dry earth), 3,200 lb/bcy. the expected haul-road rolling resistance is 80 lb/ton. the average scraper load will be 28.2 lcy. the haul route has three segments: 700 ft at a grade of + 5%; 2,500 ft at + 2% grade; and 500 ft at - 2% grade (moving from the cut to the fill). to account for acceleration and deceleration, use an average speed of 5 mph for 200 ft at each end of the haul and

To protect all four receptacles on a branch circuit that surrounds a swimming pool, you would install which of the following configurations? a. gfci feed-through receptacle at the end of the load's circuit b. gfci-terminated receptacle at the beginning of the load's circuit c. gfci feed-through receptacle at the beginning of the load's circuit and the other receptacles connected to the load side of that receptacle d. gfci-terminated receptacle at each end of the load's circuit

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

What is the single most important equation in all of physics?