capitulo 9 solidos fisica
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Transcript of capitulo 9 solidos fisica
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Capitulo 9 Solidos
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Densidad
• La densidad de una sustancia se define como masa / unidad de volumen.
• Densidad = M/V• Gravedad especifica = densidad del
material /densidad del agua a 4 grados centigrados
• Densidad del agua = 1000 kg /m 3
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Tabla 9,1
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Ejercicio de libro n.4
• Calcule la masa de una barra rectangular de oro solido que tiene como dimensiones 4.50 cm x 11 cm x 26 cm.
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Presión (Pascal)
• Presión = F / A
• 1 pascal = n/metro cuadrado.
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Deformación Solidos
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Solidos
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Grafica esfuerzo deformacion
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Solidos
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Tanto el módulo de Young como el límite elástico son distintos para los diversos materiales. Tabla 9.2
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Traccion
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Ejemplo
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Compresion
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Ejemplo
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Deformación
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Cambio de Longitud
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La Deformacion
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Esfuerz0
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Combinando Ecuaciones
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Ejemplos
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Ecuación Completa
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Materiales Biologicos
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Ejemplo
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Ejemplo
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Tabla 9.3 Resistencia Máxima de Materiales
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Problema 9 serway
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Problema 12,13
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Problema 19