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  • IMAT 2015 Q59 Physics and Mathematics

  • Nicolas Sanchez

    June 22, 2021 at 5:32 am
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    An aluminium block of mass 2.5 kg is supplied with 9000 J of thermal energy. This causes its temperature to rise by 4 K. Which expression gives the specific heat capacity of this aluminium, from this data?
    [Assume that the block remains solid throughout, and that no additional energy is exchanged between the block and the surroundings.]

    A. 9000 x 2.5 x 4 K kg^-1 K^-1

    B. [(2.5 x 4)/9000] K kg^-1 K^-1

    C. [(9000 x 2.5)/4] J kg^-1 K ^-1

    D. [(9000)/(2.5 x 4)] J kg^-1 K ^-1

    E. [(9000 x 4)/2.5] J kg^-1 K ^-1

    [see below for original question format]


    July 30, 2021 at 1:01 am
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    Down Accepted answer

    Answer= D

    For this question, you should know the concept of Specific Heat Capacity(c).

    It is the amount of heat required to raise the temperature of 1 kilogram of a substance by 1 kelvin.

    It is given by- Delta(Q)= mc Delta(T)

    where, Q= change in heat energy

    m= mass

    c= specific heat capacity

    T= change in temperature

    Put the given values in above formula to get value of c.

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