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3 October, 11:11

Calcula el peso aparente de una bola de aluminio de 50 cm3, cuando se encuentra totalmente sumergida en alcohol. Datos: la densidad del aluminio es 2,7 g / cm3 y la densidad del alcohol es 0,8 g / cm3

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  1. 3 October, 11:40
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    W_apparent = 93.1 kg

    Explanation:

    The apparent weight of a body is the weight due to the gravitational attraction minus the thrust due to the fluid where it will be found.

    W_apparent = W - B

    The push is given by the expression of Archimeas

    B = ρ_fluide g V

    ρ_al = m / V

    m = ρ_al V

    we substitute

    W_apparent = ρ_al V g - ρ_fluide g V

    W_apparent = g V (ρ_al - ρ_fluide)

    we calculate

    W_apparent = 980 50 (2.7 - 0.8)

    W_apparent = 93100 g

    W_apparent = 93.1 kg
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