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physics

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A 2.8 kg air mattress is 2 m long, .5 m wide, & .1 m thick. What mass can it support in water before sinking?

  • physics -

    It can support a mass M such that
    M + m = volume x (water density)
    where m is the mass of the mattress and Volume = 0.1 m^3. The water density is 1000 kg/m^2.

    Solve for M

  • physics -

    10000

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