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4. With an exponential growth rate in energy consumption using coal, it is estimated that it will take 135 years to deplete the coal content

4. With an exponential growth rate in energy consumption using coal, it is estimated that it will take 135 years to deplete the coal content starting in 1995. What is the growth rate assuming no growth in consumption starting 19957 Assume consumption rate is 460x10 Btu/year and the total coal equivalent energy from coal is 290,000x105 kJ

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