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- 1. Multiple ChoiceWhich of the following properties is NOT a characteristic of an ideal fluid?laminar flow (e.g. magical water fountains)turbulent flow (e.g. water rapids)nonviscousincompressable
- 2. Multiple ChoiceWhich of the following statements is NOT correct?a fluid flowsa fluid has a definite shapemolecules of a fluid are free to move past each othera fluid changes its shape easily
- 3. Multiple ChoiceHow does a liquid differ from a gas?a liquid has both definite shape and definite volume, whereas a gas has neithera liquid has a definite volume, unlike a gasa liquid has a definite volume like a gasda liquid has a definite shape whereas a gas has a definite volume
- 4. Multiple ChoiceWhich of the following statements about floating objects is correct?the object's density is greater than the density of the fluid on which it floatsthe object's density is equal to the density of the fluid on which it floatsThe volume of displaced fluid is greater than the volume of the objectThe buoyant force equals the object's weight of the displaced fluid
- 5. Multiple ChoiceIf an object is only partially submerged in a fluid, which of the following is true.the volume of the displaced fluid equals the volume of the objectthe density of the fluid equals the density of the objectthe density of the fluid is greater than the density of the objectthe density of the fluid is less than the density of the object
- 6. Multiple ChoiceWhich of the following is true according to Pascal's principle?pressure in a fluid is greatest at the walls of the container holding the fluidpressure in a fluid is greatest at the centre of the fluidpressure in a fluid is the same throughout the fluidpressure in a fluid is greatest at the top of the fluid
- 7. Multiple ChoiceWhich of the following is NOT an example of units for expressing pressure?N/m2kg/m2atmPa
- 8. Multiple ChoiceA buoyant force acts in the opposite direction of gravity. Therefore, which of the following is true of an object completely submerged in water?the net force on the object is smaller than the weight of the objectthe net force on the object is larger than the weight of the objectthe net force on the object is equal to the weight of the objectthe object appears to weigh more than it does in air.
- 9. Multiple ChoiceThe rule that the buoyant force on an object is equal to the weight of the fluid the object displaces.Pascal's principleBernoulli's principleArchimedes' principleNewton's Law
- 10. Multiple ChoiceThe rule that when force is applied to a confined fluid, the increase in pressure is transmitted equally throughout.Pascal's principleBernoulli's principleArchimedes' principleNewton's Law
- 11. Multiple ChoiceA system that multiplies force by transmitting pressure from a small surface area through a confined fluid to a larger surface area.hydraulic systemArchimedes systempressure systemBernoulli effect
- 12. Multiple Choice
What happens?Neither piston movesPiston A goes up and B goes downPiston B goes up and A goes downBoth pistons go down - 13. Multiple ChoiceHow can you get these pistons to balance?Put equal masses on both sidesPut heavier mass on the left pistonThey will never balance because one is fatter than the otherPut a heavier mass on the right piston
- 14. Multiple ChoiceHow would you calculate the force to be used on a brake of area 0.5cm2 if the slave cylinder has a 4cm2 area and needs 800N to stop the car.4 x 800 x 0.5800/0.5 x 40.5 x 4 x 800800 x 0.5 /4
- 15. Multiple Choice
Water flows through a pipe whose area is constant but whose height above the ground changes. How does speed v2 compare to v1?
v1 is greater
v2 is greater
both speeds are equal
- 16. Multiple Choice
Water flows through a pipe whose area is constant but whose height above the ground changes. How does speed P2 compare to P1?
P1 is greater
P2 is greater
both pressures are equal
- 17. Multiple Choice
Rank the sections in order from greatest pressure to least.
A, B, C, D
D, C, B, A
A, B = C = D
B = C = D, A
- 18. Multiple Choice
A fluid flows through a pipe. If the pipe size varies, the speed of a liquid also varies so as to keep the flow rate constant,
flow ratein = flow rateout
V1A1 = V2A2
Bernoulli's Equation
Continuity Equation
Torrecelli's Equation
- 19. Multiple Choice
A consequence of energy conservation as applied to ideal fluids
Bouyancy formula
Continuity Equation
Bernoulli's Equation
Torrecelli's Principle
- 20. Multiple Choice
Moving fluid through a pipe has more pressure, if
the stream lines are farther apart
stream lines are parallel
stream lines are close together
None of these
- Answer choicesTagsAnswer choicesTags