Physics, 13.08.2020 01:01 taijaababy

1- O telhado de um grande galpão mede 40 m por 75 m e é feito de zinco, cujo coeficiente de dilatação térmica linear vale 3.10^-5 oC^-1 . Ao sofrer uma elevação de temperatura de 25oC em um dia de forte calor, qual o valor da dilatação superficial do telhado? E esse aumento da área do telhado foi de um valor próximo ao da área: a) de um cartão de crédito/débito de um banco; b) de uma folha de papel sulfite; c) do tampo de uma mesa de janta; d) de uma quadra de futsal. 2 - Um cubo metálico de aresta 20 cm a 0oC, após um aquecimento uniforme, tem sua temperatura elevada em 500oC e a medida da sua aresta aumenta em 1% . Com essas informações, determine: a) a dilatação volumétrica, em cm3, sofrida pelo cubo; b) o coeficiente de dilatação volumétrico do material do cubo; c) o coeficiente de dilatação térmica linear do material do cubo.

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1- O telhado de um grande galpão mede 40 m por 75 m e é feito de zinco, cujo coeficiente de dilataçã...

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