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MMLU-Pro / 11821 / A spherical ball, 1 in. in radius and at a temperature of 800°F, is suddenly…

Problem

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question

A spherical ball, 1 in. in radius and at a temperature of 800°F, is suddenly quenched in a large pool of liquid which ismaintained at 280°F. Estimate the surface temperature of theball after one hour. The average convective heat transfer coefficienth = 2 Btu/hr ft^2°F. The properties of the ball materialare: k = 25 Btu/hrft°F\rho = 492lbm/ft^3 Cp = 0.11 Btu

category

engineering

options

  1. 600°F
  2. 417°F
  3. 650°F
  4. 280°F
  5. 325°F
  6. 800°F
  7. 500°F
  8. 475°F
  9. 720°F
  10. 350°F

src

stemez-Thermodynamics

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