Science 8 grade

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A little aluminum boat (mass of 14.50g) has a volume of 450.00cm3. The boat is placed in a small pool of water and carefully filled with pennies. If each penny has a mass of 2.50g, how many pennies can be added to the boat before it sinks?

  • Science 8 grade -

    The boat will displace its mass in water, or 450 grams

    n*2.5 + 14.5=450
    solve for n.

  • Science 8 grade -

    n=174.2 right?
    How can you do that?

  • Science 8 grade -

    you cant have .2 pennies,so it sinks on the 175th penny.

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