/u/drewhead118's posts in /r/askscience

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How does my charging cell phone fool my car's weight sensors for the passenger-side airbags?

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Imagine a lightyears-long, inflexible, incompressible rod. If I pull one end of the rod, does the other end immediately begin moving as well? If so, how is that rectified with information being bound by the speed of light? If not, does the length of the rod change? Or what else might happen?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How does my charging cell phone fool my car's weight sensors for the passenger-side airbags?	1
Imagine a lightyears-long, inflexible, incompressible rod. If I pull one end of the rod, does the other end immediately begin moving as well? If so, how is that rectified with information being bound by the speed of light? If not, does the length of the rod change? Or what else might happen?	1