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MMLU-Pro / 12058 / A block of copper is at an initial pressure and temperature of 1 atm and 520°R…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A block of copper is at an initial pressure and temperature of 1 atm and 520°R respectively. The pressure is then increased to 1000 atm in a reversible isothermal process. Find (a) the change in internal energy, (b) the change in entropy, (c) the heat absorbed, and (d) the work done, all per unit mass.

category

engineering

options

  1. (a) 69.86 × 10^-3 Btu/lbm, (b) 1.39 × 10^-4 Btu/lbm-°R, (c) 72 × 10^-3 Btu/lbm, (d) 2.14 × 10^-3 Btu/lbm
  2. (a) - 69.86 Btu/lbm, (b) 1.39 × 10^-2 Btu/lbm-°R, (c) - 72 Btu/lbm, (d) - 2.14 Btu/lbm
  3. (a) 69.86 × 10^-5 Btu/lbm, (b) 1.39 × 10^-6 Btu/lbm-°R, (c) 72 × 10^-5 Btu/lbm, (d) 2.14 × 10^-5 Btu/lbm
  4. (a) 0 Btu/lbm, (b) 0 Btu/lbm-°R, (c) 0 Btu/lbm, (d) 0 Btu/lbm
  5. (a) - 69.86 × 10^-2 Btu/lbm, (b) 1.39 × 10^-3 Btu/lbm-°R, (c) - 72 × 10^-2 Btu/lbm, (d) - 2.14 × 10^-2 Btu/lbm
  6. (a) - 69.86 × 10^-3 Btu/lbm, (b) 1.39 × 10^-4 Btu/lbm-°R, (c) - 72 × 10^-3 Btu/lbm, (d) - 2.14 × 10^-3 Btu/lbm
  7. (a) 69.86 × 10^-3 Btu/lbm, (b) -1.39 × 10^-4 Btu/lbm-°R, (c) 72 × 10^-3 Btu/lbm, (d) 2.14 × 10^-3 Btu/lbm
  8. (a) - 69.86 × 10^-4 Btu/lbm, (b) 1.39 × 10^-5 Btu/lbm-°R, (c) - 72 × 10^-4 Btu/lbm, (d) - 2.14 × 10^-4 Btu/lbm
  9. (a) 69.86 × 10^-4 Btu/lbm, (b) 1.39 × 10^-5 Btu/lbm-°R, (c) 72 × 10^-4 Btu/lbm, (d) 2.14 × 10^-4 Btu/lbm
  10. (a) - 69.86 × 10^-2 Btu/lbm, (b) -1.39 × 10^-3 Btu/lbm-°R, (c) - 72 × 10^-2 Btu/lbm, (d) -2.14 × 10^-2 Btu/lbm

src

stemez-Thermodynamics

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Source and history

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