
GENERAL PHYSICS 2 (FLUIDS)
Quiz by Mark Paulo San Juan
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- 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