EXAMEN BI FLUIDOS
Quiz
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Education
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1st Grade
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Medium
Mayra Quinones
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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Un sólido pesa 2.6 N en el aire y 2.1 N cuando se sumerge en agua. Determine la densidad del objeto en kg/m3
6000
5200
1200
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
1. La arista de un cubo sólido de aluminio mide 8 cm. Calcule su masa, conociendo la densidad del aluminio de 2700 kg/m3
1.38 kg
1.6 kg
1.1kg
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Determina la presión absoluta ejercida sobre un buceador que nada a 4 m debajo de la superficie de un lago de agua dulce.
140.5 kPa
137 KPa
135 KPa
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Los émbolos de una prensa hidráulica tienen diámetros de 10 cm y 140 cm respectivamente, ¿qué fuerza se requiere aplicar sobre el émbolo menor para levantar una carga de 1200 kg sobre el émbolo mayor?
60N
47N
65N
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
El agua fluye por un tubo de 8 cm de diámetro con una velocidad de 1 m/s entra a otra sección cuyo diámetro es de 4 cm. Calcule la velocidad en la sección menor
4 m/s
6 m/s
10 m/s
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Es el resultado de la fuerza de atracción entre las moléculas de un sólido y un líquido cuando hacen contacto.
Capilaridad
Tensión superficial
Viscosidad
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Es la fuerza que mantiene unidas a las moléculas de una sustancia.
Cohesión
Adhesión
Tensión
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