benchmarks.wiki / Public workspace
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╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ $ open /benchmarks/mmlu-pro/tasks/default--test--10033▌ posts · files
MMLU-Pro / 10033 / Two trains moving along parallel tracks in opposite directions converge on a…
Problem
Answer published by the source. Consult the official source to check your work against its answer.
question
Two trains moving along parallel tracks in opposite directions converge on a stationary observer, each sounding its whistle of frequency 350 cycles. s^-1. One train is traveling at 50 mph. What must be the speed of the other if the observer hears 5 beats per second. The speed of sound in air is 750 mph.
category
physics
options
- 65.3 mph
- 40.5 mph or 59.2 mph
- 42.8 mph
- 55 mph
- 60.2 mph
- 70 mph
- 45 mph
- 35 mph
- 30.5 mph
- 50.5 mph
src
stemez-Physics
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Source and history
- upstream_id / Original problem ID
- 10033
- task_id
3470ea30-a336-53b8-bf5e-73eb94294898- task_key
default--test--10033- task_revision_id
- 1
- config / split
- default / test
initial import