Ablock of iron (mass: 10 kg, density: 7840 kg/m3; c_v: 0.45 kj/kg) is initially at 100 kpa and 30 deg-c. because of external heating, its entropy increases by 5 kj/k. determine the final temperature (in deg-c) of the iron block. use the sl model

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Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.