Equations and Conversions doubling time -%growth Ar vg At avg I m= 3.281 ft :00
ID: 1649101 • Letter: E
Question
Equations and Conversions doubling time -%growth Ar vg At avg I m= 3.281 ft :00 e -200. t 1 hour 3600 s W=Fd 1 ton coal 25 x 10 BTU Igal gasoline = 1.24 x 105 BTU KWhr 3413 BTU |BTU = 1055 J m 1 mile 1 bbl crude oil- 5.8 x 10° BTU 1hp 746 W 1 ft natural gas 1000 BTU W E W+Q=A(KE + PE +TE) PE-mgh usefulvsork-1100% total energy input efficiencyuseful work Q = mcAT Q A AT efficiency Cwater 4186 J/kg°C Cice= 2090 J/kg Ly for H2O 335 kJ/kg Ly for H2O- 2260 kJ/kg Cair = 1004 J/kg°C Cwood 2800 J/kg C Table .I WORLD AND UNITED STATES PROVEN RESERVES: 2003 EFFICIENCY DEVICE Electric motor Wind turbine Electric generator Electric transmission 7596 United States Lifetime Resource World 1213 x 109 bbl 22.7 x 10, bbl Oil 10 years 7.0 x 10'"Btu0.12 x 10" Bru 0.12 x 1018 Btu 88% 90% 18% 25% 5505 x 1012 cf 5.4 × 1018 Btu 1.08 x 1012 tons 27 x 1018 Btu 272 x 10' bbl 1.5 x 1018 Btu Natural gas 0.19 x 1018 Btu 0.27x10'' tons lines Solar cell Gas auto engine Coal 250 years 7 x 101 Btu 22 x 10 bbl Oil sands 8 years 0.12 x 108 Btu Annual Energy Consumption BTU US total consumption Global consumption 98 x 105 BTU 495 X 10'% BTUExplanation / Answer
1213 billion barrel is sufficient for 10 years
then 12 billion barrel is sufficient for (12*10)/1213 = 0.0989 years
1 year = 365 days then
0.0989 years = 365*0.0989 = 36 days
hence the answer is 36 days
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