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14 January, 15:15

100j of heat energy are transferred to 80 g of mercury. By how much does the temperature increase?

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  1. 14 January, 16:55
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    Given: Heat given to mercury (Q) = 100 J

    Mass of mercury (m) = 80 g = 80 * 10⁻³ kg

    Specific Heat capacity of mercury (c) = 138 J/kg°C

    Let the rise of temperature be Δt

    Formula Used: Q = mcΔt

    Here, all alphabets are in their usual meanings.

    Calculation:

    Q = mcΔt

    or, Δt = Q / mc

    or, Δt = 100 J / [ (80 * 10⁻³ kg) * (138 J/kg°C) ]

    or, Δt = 9.058 °C

    or, Δt = 9.1 °C

    Hence, the required increase in temperature will be 9.1 °C.
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