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22 November, 04:16

A poker is a stiff, nonflammable rod used to push burning logs around in a fireplace. for safety and comfort of use, the poker should be made from a material with which properties?

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  1. 22 November, 04:39
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    Answer: The poker stick should have low thermal conductivity and high specific heat.

    Explanation: For a poker stick that is non flammable, it should have some properties which will not let it heat up faster.

    Two properties that satisfy the poker stick are:

    Specific heat Thermal conductivity

    Specific heat is defined as the amount of heat require to raise the temperature of a mass M by 1 °C. More the specific heat, more amount of heat will be required to raise the temperature of a substance.

    Thermal conductivity is defined as the ability of a substance to conduct heat. More thermal conductivity means that the substance will get hot faster as it will conduct more amount of heat.

    So, for a substance that should not conduct more heat like the poker stick must have high specific heat and low thermal conductivity.
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