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GENERAL PHYSICS 2 (FLUIDS)

Quiz by Mark Paulo San Juan

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15 questions
Show answers
  • Q1

    According to Bernoulli's Principle, this is a consequence of the curved upper surface of an airfoil, the technical name for an airplane wing. Because of the curvature, air traveling across the top of the wing moves faster than the air moving along the wing's bottom surface, which is flat. What force of flight is described?

    Thrust

    Weight

    Lift

    Drag

    45s
  • Q2

    In 1738, Bernoulli published “Hydrodynamica”, the study of _____________.

    how fluids behave when they are in motion

    how liquids behave when they are in motion

    how vessels move when they are on water

    how forces of flight are always acting on an aircraft

    45s
  • Q3

    Suppose that a huge tank 50m high and filled with water is open to the atmosphere and is hit with a bullet that pierces one side of the tank, allowing water to flow out. The hole is 2m above the ground. If the hole is very small in comparison with the size of the tank, how quickly will the water flow out of the tank?

    30.67 m/s

    36.70 m/s

    470.4 m/s

    21.69 m/s

    300s
  • Q4

    Bernoulli asserted in “Hydrodynamica” that as a fluid moves faster, it produces __________ and conversely, slower moving fluids produce _____________. What best completes the statement?

    changing pressure, constant pressure

    greater pressure, less pressure

    less pressure, greater pressure

    constant pressure, changing pressure

    45s
  • Q5

    The total mechanical energy of the moving fluid comprising the gravitational potential energy of elevation, the energy associated with the fluid pressure and the kinetic energy of the fluid motion, remains constant. The statement pertains to what principle related to fluid mechanics?

    Bernoulli’s Principle

    Principle of Continuity

    Pascal’s Law

    Archimedes Principle

    45s
  • Q6

    Which law means that if there is an increase in pressure at any point in a confined fluid, there will also have an increase at every other point in the container?

    Bernoulli’s

    Archimedes'

    Pascal's

    Continuity

    45s
  • Q7

    A hydraulic lift consists of a small piston with a diameter of 10.0 m, and the large one has a diameter of 16.0 m. How much force must be exerted on the small-diameter piston in order to support the weight of a car at 12200 N?

    4770 N

    7440 N

    4760 N

    7470 N

    300s
  • Q8

    In pascal’s principle formula shown below, which represents the area where input force is applied?

    F1/A1 = F2/A2

    A1

    F2

    F1

    A2

    45s
  • Q9

    Who is the man behind Pascal’s Law of Fluid Mechanics?

    Blaithe Pascal

    Blaise Pascal

    Blaise Pasqal

    Blaze Pascal

    15s
  • Q10

    Which is NOT an application of Pascal’s Law of Fluid Mechanics?

    Brake System

    Car Lift Jack

    Hydraulic Lift

    Air Dancer

    15s
  • Q11

    What do you call the amount of force pushing an area?

    Velocity

    Fluidity

    Viscosity

    Pressure

    15s
  • Q12

    A 0.40-kg crown is submerged in water and its weight in water is measured to be 7.30 N. If the density of pure gold is 9,650kg/m³, using Archimedes Principle determine if the crown is made with pure gold or not.

    Insufficient data to answer the problem.

    Pcrown = Pgold

    The crown is not made with pure gold.

    The crown is made with pure gold.

    300s
  • Q13

    What do you call the upward force exerted by the liquid displaced by the body when it is placed inside the liquid?

    Gravitational Force

    Frictional Force

    Buoyant Force

    Centripetal Force

    15s
  • Q14

    How much of an iceberg is submerged below the water if the density of ice is 917 kg/m3  and the density of water is 1000 kg/m3?

    91.7%

    9.17%

    10.9%

    109%

    45s
  • Q15

    What states of matter do FLUIDS belong? 

    solid and liquid

    solid, liquid and gas

    liquid and gas

    solid and gas

    10s

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