Level curves (isothermals) are shown for the typical water temperature (in °C) in Long Lake (Minnesota)...
When the air temperature is below 0 C, the water at the surface of a lake freezes to form an ice sheet. The longer the air remains at this temperature, the thicker the ice sheet will become. Will a lake in Minnesota that is uniformly 40 m deep ever freeze solid? To answer this, calculate how long it would take to freeze all the water in the lake. Assume that the upper surface of the ice sheet is steady at...
TPrice 38 36 34 32 30 De 28 22 20 18 16 14 12 10 8 De D 80 120 160 200 240 280 320 360 400 440 480 520 560 Refer to Figure 9-5. With trade, consumer surplus is a. $3,240. O b. $6,480. c. $6,760 O d. $13,520. 40
point C B and A
1) Points: 10 A lake with a water depth of 12 m is underlain by a soil with a total unit weight of 18.2 kN/m'. Compute the total vertical stress, a, and the effective vertical stress, d, at a point 8 m below the bottom of the lake. 2) Points: 20 Develop a plot of o, u, and o'vs. depth for the soil profile below. Consider depths from 0 to 10 m, assume hydrostatic conditions...
The figure shows the demand and cost curves for a monopolistically competitive firm in the long run. The maximum economic profit this firm can earn equal equals O A. $160. B. $80. OC. $0. OD. $120. MC ATC Price and costs (dollars per unit) MR 4 8 12 16 20 24 Quantity (units per day)
Find the compounds using IR and NMR:
Problem 25 2251 IR Spectrum (liquid film) 800 1600 1200 4000 3000 2000 v (cm) 100 Mass Spectrum M 117 80 77 60 91 40 20 CgH7N 200 80 120 160 240 280 40 m/e expansion 13C NMR Spectrum (100.0 MHz, CDCI, solution) 130 129 ppm DEPT CH Cн,! сн! expansion 130 129 ppm solvent proton decoupled (ppm) 40 200 160 120 80 H NMR Spectrum (400 MHz. CDCI, solution) TMS 10 7...
Find the compounds using NMR and IR:
Problem 85 IR Spectrum (liquid fiim) 1720 1600 2000 v (cm) 800 3000 1200 4000 100 Mass Spectrum 73 140 138 80 No significant UV 60 115 absorption above 220 nm 40 M 194/196 (1% ) 20 CeH1102Br 120 160 200 240 280 40 80 m/e 13C NMR Spectrum (50.0 MHz, CDCI, solution) DEPT CH, Cн, сн! solvent proton decoupled 8 (ppm) 160 120 40 200 80 H NMR Spectrum (200 MHz, CDCI,...
Problem 2 000 8 Mass Som 8 8 8 2 CH, SN 50 120 160 200 240 280 C NMR Spectrum MCDO, DEPT OK out ont protondeco 200 160 120 80 40 08 (ppm) change "H NMR Spectrum (200 MG, COO, 0,0 10 9 8 7 6 5 4 3 2 1 (ppm)
The graph below shows shows a perfectly competitive market for wheat and a typical farm in the market. The demand for wheat increases from D1 to D2. Assume that wheat production is a constant-cost industry. A typical farm The market for wheat Cost ($) Price (S per bushel) MC 10 10 9 ATC 8 7.20 715 751 D2 5 5 40 80 120 160 200 240 Quantity (thousands of bushels) 20 40 60 80 100 120 Quantity (milions of bushels)...
ater to be pumped from a lake to a storage tank in a ranch. Water temperature is 60 F.The clevation of the pipe exit that will feed the tank is 50 ft higher than the lake water surface. It is required that a 4-hour pumping time will feed the storage tank by 1,200 gallons of water. While operating at the required flow rate, the pump will generate a head of 60 n. Coeflicients of minor loss due to filtering, fittings,...
Label the spectra and propose a structure for the
compound.
Compound 5 IR Spectrum Olquid fim 1740 4000 3000 20 ,1600 1200 300 100% Mass Spectrum M = 150/152 (15) CH,40, CI 240 280 40 80 120 160 200 13C NMR Spectrum (500 M , CDC, son DEPT CH CH CH selvon proton decoupled 200 160 120 80 40 0 8 (ppm) 'H NMR Spectrum (200 MH. COCI, solution 10 9 8 7 6 5 4 3 2 (ppm)