7.15 A new sports stadium is being proposed for a city in North Dakota. Some of the project details are as follows. To prepare for the footing and foundation 300 000 cubic yards of dirt will need to be removed. It will have an inflatable roof that covers 10.0 acres and its interior volume will be 60.0 × 106 cubic feet. During construction, 40.0 × 103 cubic yards of concrete, 11.9 × 103 tons of reinforcing steel and 5.00 × 102 tons of structural steel will be utilized. The roof material will include an outer layer of Teflon-coated fiberglass together with an inner layer of woven fiberglass. Given this information, answer the following: (a) If removed evenly over the 10 acres, how deep of a hole would be formed as a result of the excavation? (b) What is the total mass of concrete and steel in lbm? (c) If the two-layer fiberglass roofing material has a mass of 0.6667 lbm/ft², what is the total mass of the roof? (d) If 10.0 in, of wet snow is collected on the roof, what is the added mass to the roof? (Assume 1 in. of water equals 10 in. of snow.)

7.15 A new sports stadium is being proposed for a city in North Dakota. Some of the project details are as follows. To prepare for the footing and foundation 300 000 cubic yards of dirt will need to be removed. It will have an inflatable roof that covers 10.0 acres and its interior volume will be 60.0 × 106 cubic feet. During construction, 40.0 × 103 cubic yards of concrete, 11.9 × 103 tons of reinforcing steel and 5.00 × 102 tons of structural steel will be utilized. The roof material will include an outer layer of Teflon-coated fiberglass together with an inner layer of woven fiberglass. Given this information, answer the following: (a) If removed evenly over the 10 acres, how deep of a hole would be formed as a result of the excavation? (b) What is the total mass of concrete and steel in lbm? (c) If the two-layer fiberglass roofing material has a mass of 0.6667 lbm/ft², what is the total mass of the roof? (d) If 10.0 in, of wet snow is collected on the roof, what is the added mass to the roof? (Assume 1 in. of water equals 10 in. of snow.)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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