How Much Energy Is Needed to Penetrate 9 Feet of Reinforced Concrete?

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The discussion centers on the kinetic energy or momentum required for an object to penetrate 9 feet of heavy grade reinforced concrete. The initial question is deemed too vague, with suggestions that it may relate to specialized munitions like bunker busters. A notable point raised is that neutrinos can pass through matter with minimal energy, specifically less than an electronvolt. The conversation highlights the complexities involved in determining the necessary energy levels for such penetration. Ultimately, the topic remains open-ended, requiring more specific parameters for a definitive answer.
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How much kinetic energy or momentum would an object need to penetrate 9 feet of heavy grade reinforced concrete?
 
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The question is waaaaaaaaaaaay too vague. Are you talking about things like bunker busters?
 
Infamo said:
How much kinetic energy or momentum would an object need to penetrate 9 feet of heavy grade reinforced concrete?

Neutrinos do it with less than an electronvolt...
 

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