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Math Help - specific gravity

  1. #1
    Junior Member allsmiles's Avatar
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    specific gravity

    Specific Gravity
    Steel 7.8
    Gold 19.3
    Lead 11.3
    Zinc 7.0
    Specific gravity is a property that describes how dense something is compared to water (density = 1 g
    mL
    ). For instance, sulfur has a specific gravity of 2.0, which means it has a density of 2.0 g
    mL
    . The table lists the specific gravity of four common metals.

    Making instruments to transmit sound is an important technological advancement. If a designer wants to transmit sound as quickly as possible through a wire made of one of these substances, which substance would she choose?

    A)
    Gold
    B)
    Lead
    C)
    Steel
    D)
    Zinc
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  2. #2
    MHF Contributor
    skeeter's Avatar
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    Quote Originally Posted by allsmiles View Post
    Specific Gravity
    Steel 7.8
    Gold 19.3
    Lead 11.3
    Zinc 7.0
    Specific gravity is a property that describes how dense something is compared to water (density = 1 g
    mL
    ). For instance, sulfur has a specific gravity of 2.0, which means it has a density of 2.0 g
    mL
    . The table lists the specific gravity of four common metals.

    Making instruments to transmit sound is an important technological advancement. If a designer wants to transmit sound as quickly as possible through a wire made of one of these substances, which substance would she choose?

    A)
    Gold
    B)
    Lead
    C)
    Steel
    D)
    Zinc
    ... the speed of sound through different metals is not solely a function of density, but also of elasticity.

    of the four metals listed, a steel medium has the fastest speed of sound, I do believe.
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