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Physics

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Three identical glasses are filled to the same height with water. The first glass is filled with water only(Wa). The second glass has an object of volume V and density half that of water floating in it (Wb). The third glass has an object of volume V and density twice that of water on the bottom of it (Wc). All three glasses are sitting on scales. Compare the weight of each of the glasses: Wa, Wb, Wc.

  • Physics -

    Let
    mass of water in Wa = Ma
    mass of glass = Mg

    a) mass = Ma+Mg

    b) mass = Ma + Mg - ρV + ρV = Ma + Mg

    c) mass = Ma + Mg + ρV - V = Ma + Mg - (ρ-1)V

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