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ghellquist
  • Member for 4 years, 5 months
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Why were nomadic tribes (like the Mongols) from the Eurasian steppes a much reduced threat from the 15th century onwards?
Dec 2, 2022
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Why are winches not used for towing commercial planes up?
24
Why are there extra restrictions on constant-speed propellers?
21
How do we know the precise position of the JWST?
18
What is the current limit for a photon's rest mass?
17
How does a computer know which device is connected to the usb port?

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