Examen Presión

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| By RichardHalliwell
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RichardHalliwell
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Quizzes Created: 1 | Total Attempts: 6,550
| Attempts: 6,550
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  • 1/10 preguntas

    Se define como la fuerza por unidad de superficie, que se calcula tomando la fuerza total y dividiéndolo por el área sobre la que actúa la fuerza. 

    • Presion Atmosferica
    • Presion Hidrostatica
    • Presion
    • Presion Absoluta
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Examen Presión - Quiz
About This Quiz

El siguente examen contiene preguntas relacionadas con el tema de Presion de Fisica, incluye problemas para resolver.

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  • 2. 

    ¿Como se define la Presión Hidrostática?

    • Fuerza por unidad de area que ejerce un liquido en reposo sobre las paredes del recipiente que lo contiene.

    • Fuerza por unidad de peso que ejerce un solido en reposo sobre las paredes del recipiente que lo contiene.

    • Fuerza por unidad de area que ejerce cuarzo de hidrostacion

    • Es la presion que se ve cuando un globo explota liberando sistancias toxicas

    Correct Answer
    A. Fuerza por unidad de area que ejerce un liquido en reposo sobre las paredes del recipiente que lo contiene.
    Explanation
    The correct answer explains that hydrostatic pressure is the force per unit area exerted by a liquid at rest on the walls of the container that holds it.

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  • 3. 

    La letra Pe indica presión que se mide en (Nw/m3) y se define como la fuerza (F) que se mide en Newtons (Nw2)  aplicada sobre una determinada area (A) que se mide en metros cuadrados (m3).

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The given statement is false. The correct unit for pressure is Pascal (Pa), not Nw/m3. The letter "Pe" does not represent pressure in any recognized unit. The correct unit for force is Newton (N), not Nw2. Additionally, the correct unit for area is square meter (m2), not m3.

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  • 4. 

    Esta formula se describe como (Ph) es igual a la densidad (p) que se mide en Kg/m3, que multiplica a la gravedad (g) 9.81 m/s2 y que multiplica a la altura en metros (h). 

    • Presion Hidrodinamica

    • Presion Hidrostatica

    • Presion Hidrogenada

    • Presion

    Correct Answer
    A. Presion Hidrostatica
    Explanation
    The given formula describes the hydrostatic pressure, which is equal to the density (p) measured in Kg/m3, multiplied by the gravity (g) 9.81 m/s2, and multiplied by the height in meters (h). Therefore, the correct answer is "Presion Hidrostatica," which translates to hydrostatic pressure in English.

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  • 5. 

    Donde F1 y F2 son las fuerzas (Nw) mayor y menor respectivamente y A1 y A2 son las areas del los embolos mayor y menor respectivamente (m2).

    • Principio de Arquimedes

    • Principio de las Fuerzas

    • Principio de Pascal

    • Principio de Presion

    Correct Answer
    A. Principio de Pascal
    Explanation
    El principio de Pascal establece que la presión aplicada a un fluido contenido en un recipiente se transmite por igual en todas las direcciones. En el contexto de la pregunta, se mencionan fuerzas y áreas de embolos, lo cual sugiere que se está hablando de un sistema hidráulico. Según el principio de Pascal, si se aplica una fuerza mayor en el embolo mayor, esta fuerza se transmitirá a través del fluido y generará una presión mayor en el embolo menor. Por lo tanto, la respuesta correcta es el principio de Pascal.

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  • 6. 

    Martha Julia debe de calcular la fuerza que debe aplicarse sobre un area de 0.74 m2 para que exista una presión de 368 Nw/m2. ¿Cual es esa fuerza?

    • 274.50 Nw

    • 12000 Nw

    • 273.32 Nw

    • 213.34 Nw

    Correct Answer
    A. 273.32 Nw
    Explanation
    Martha Julia needs to calculate the force that needs to be applied on an area of 0.74 m2 to achieve a pressure of 368 Nw/m2. The correct answer is 273.32 Nw because it is the closest value to the calculated force based on the given information.

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  • 7. 

    A Miriam le interesa saber la presion hidrostatica de una prensa que se encuentra a una profundidad de 247.78 m en el mar, ayudale a Miriam,  ¿cual es la respuesta? 

    • 2430721.8 Nw/m2

    • 242.8 Nw/m2

    • 4530721.8 Nw/m2

    • 2430755.8 Nw/m3

    Correct Answer
    A. 2430721.8 Nw/m2
    Explanation
    Miriam is interested in knowing the hydrostatic pressure of a press located at a depth of 247.78 m in the sea. The correct answer is 2430721.8 Nw/m2.

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  • 8. 

    Maria desea saber que fuerza se obtendra en el embolo mayor de una prensa hidraulica cuya area es de 167 cm2, cuando el embolo menor de area igual a 14 cm2, se aplica una fuerza de 450 Nw.  

    • 5367 Nw

    • 2346.8571 Nw

    • 8571 Nw

    • 5367.8571 Nw

    Correct Answer
    A. 5367.8571 Nw
    Explanation
    The correct answer is 5367.8571 Nw. In a hydraulic press, the force exerted on the larger piston is directly proportional to the force applied on the smaller piston. This is because the pressure is the same throughout the system. By using the formula F1/A1 = F2/A2, where F1 is the force applied on the smaller piston, A1 is the area of the smaller piston, F2 is the force exerted on the larger piston, and A2 is the area of the larger piston, we can calculate the force exerted on the larger piston. Plugging in the values given in the question, we get F2 = (450 Nw)(167 cm2)/(14 cm2) = 5367.8571 Nw.

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  • 9. 

    Is the force per unit area applied in a direction perpendicular to the surface of an object.

    • Pressure

    • Mechanic Pressure

    • Relative Pressure

    • Hidrostatic Pressure

    Correct Answer
    A. Pressure
    Explanation
    Pressure is defined as the force per unit area applied in a direction perpendicular to the surface of an object. It is a measure of how much force is distributed over a given area. When a force is applied perpendicular to the surface of an object, it creates pressure, which can be calculated by dividing the force by the area. Therefore, pressure is the correct answer in this context.

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  • 10. 
    De que tema es esta formula -----------> - ProProfs

    De que tema es esta formula ----------->

    • Principio de Pascal

    • Principio de Joule

    • Principio de Arquimedes

    • Presion Atmosferica

    Correct Answer
    A. Principio de Pascal
    Explanation
    The correct answer is "Principio de Pascal." This principle states that when there is an increase in pressure at any point in a confined fluid, there is an equal increase in pressure throughout the entire fluid. This principle is used to explain various phenomena, such as hydraulic systems and the operation of hydraulic lifts.

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  • Current Version
  • Jul 22, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 07, 2011
    Quiz Created by
    RichardHalliwell
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