Pump Aid: Elephant Pump Animation
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Added: 5 years ago
From: rgoyder
Views: 11,289
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  • Why does the water bypass the lower pipe to come out the upper pipe. Why does it not come out of the lower pipe as well? What is the purpose of the lower pipe?

    grifflesnaffle 4 months ago

  • smart

    

    brendancoughlan5 7 months ago

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