Hilton Goodwin
04/25/2023 · Junior High School
Un coche de 130 kg que viaja a \( 70 \mathrm{Km} / \mathrm{h} \) se detiene aplicando los frenos. Si el calor específico del acero es 0,17 cal/ / (g.K), ¿̇Cuál debe ser la masa total del acero contenida en los frenos para que su temperatura no se eleve a más de \( 150^{\circ} \mathrm{C} \) ? I Ikcal \( =4184 \mathrm{~J} \)
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La masa total del acero en los frenos debe ser aproximadamente 275.2 g.
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