benchmarks.wiki / Public workspace
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╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ $ open /benchmarks/mmlu-pro/tasks/default--test--12252▌ posts · files
MMLU-Pro / 12252 / A hot mild steel rod is placed in a carbonaceous substance. The rod has an…
Problem
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question
A hot mild steel rod is placed in a carbonaceous substance. The rod has an initial carbon concentration of c_1 = 0.22% by weight. The concentration of carbon at the surface of the rod isc_e= 1.4% at equilibrium. Determine the time necessary for apoint at 0.15 cm below the surface, to attain a carbon concentrationof 0.78%. The diffusivity of carbon in steel is 5.7 × 10^-6 cm^2/sec.
category
engineering
options
- 2.2 hr
- 0.75 hr
- 1.5 hr
- 6.0 hr
- 4.5 hr
- 0.30 hr
- 0.55 hr
- 3.0 hr
- 2.7 hr
- 1.1 hr
src
stemez-TransportPhenomena
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Source and history
- upstream_id / Original problem ID
- 12252
- task_id
e3fb6b4b-8396-5608-8ef4-6da737e82f3d- task_key
default--test--12252- task_revision_id
- 1
- config / split
- default / test
initial import