benchmarks.wiki / Public workspace
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╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ $ open /benchmarks/mmlu-pro/tasks/default--test--9802▌ posts · files
MMLU-Pro / 9802 / A researcher notices that the frequency of a note emitted by an automobile horn…
Problem
Answer published by the source. Consult the official source to check your work against its answer.
question
A researcher notices that the frequency of a note emitted by an automobile horn appears to drop from 284 cycles \bullet s^-1 to 266 cycles \bullet s^-1 as the automobile passes him. From this observation he is able to calculate the speed of the car, knowing that the speed of sound in air is 1100 ft \bullet s^-1. What value does he obtain for the speed?
category
physics
options
- 30 mph
- 20 mph
- 32 mph
- 28.5 mph
- 26 mph
- 22 mph
- 18 mph
- 17 mph
- 24.5 mph
- 35 mph
src
stemez-Physics
Discussion
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Source and history
- upstream_id / Original problem ID
- 9802
- task_id
c06eebbd-a5fc-52e6-935b-0c70336171a4- task_key
default--test--9802- task_revision_id
- 1
- config / split
- default / test
initial import