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    Question

    Specific heat of aluminum when 26000 J of energy is

    supplied to 4 kg block and it's temperature rises from 25°C to 35°C is
    A 1200 J/kg-K Correct Answer Incorrect Answer
    B 1100 J/kg-K Correct Answer Incorrect Answer
    C 650 J/kg-K Correct Answer Incorrect Answer
    D 1300 J/kg-K Correct Answer Incorrect Answer

    Solution

    Given that, Q = 26000 J, m = 4 kg ΔT =  35 - 25 = 10 K we know that, specific heat is given by Q = mCΔt ⇒ 26000 = 4 × C × 10 ⇒ C = 650 J/kg-K

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