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25 June, 09:46

considere que o calor específico de um material presente nas cinzas seja c=0,8j/gc. Supondo que esse material entre na turbina a 20c, a energia cedida a uma massa de m=5g do material para que ele atinja uma temperatura de 800c é igual a

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  1. 25 June, 12:36
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    3120J

    Explanation:

    Given parameters:

    C = Specific heat capacity = 0.8J/g°C

    Initial temperature = 20°C

    Mass given = 5g

    Final temperature = 800°C

    Unknown:

    Energy given to the mass = ?

    Solution:

    To find the energy given to the mass, let us simply use the expression below:

    H = m c ΔT

    H is the unknown, the energy supplied

    m is the mass of the substance

    c is the specific heat capacity

    ΔT is the change in temperature

    Input the variables;

    H = 5 x 0.8 x (800 - 20) = 3120J
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