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Fluid Mechanics Questions - All Grades

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Grade 10 Fluid Mechanics
Grade 12 Fluid Mechanics
Grade 8 Fluid Mechanics
Grade 9 Fluid Mechanics
Bernoulli's principle applies to                         .
  1. gases only
  2. liquids only
  3. both gases and liquids
  4. neither gases or liquids
Grade 12 Fluid Mechanics
Grade 9 Fluid Mechanics
Which one of the following substances will float in water? (Note: The density of water is 1.0 [math]g/{cm^3}[/math].)
  1. gold- density = 19.3 g/cm
  2. milk - density = 1.03 g/cm
  3. ice - density 0.92 g/cm
  4. b and c
Grade 9 Fluid Mechanics
A large truck passes a car on the highway. According to Bernoulli's principle, which of the following should occur?
  1. Pressure decreases between the vehicles, so the car and truck move slightly apart.
  2. Pressure decreases between the vehicles, so the car and truck move slightly together.
  3. Pressure increases between the vehicles, so the car and truck move slightly apart.
  4. Pressure increases between the vehicles, so the car and truck move slightly together.
Grade 9 Fluid Mechanics
Two tall buildings are separated by a narrow alleyway. On a windy day, wind gusts move very quickly through the alley. If the buildings are not constructed properly, which of the following could be a concern when this occurs?
  1. The buildings' windows could be blown outward into the alley because of air pressure differences.
  2. The buildings' windows could be blown inward into the building because of air pressure differences.
  3. The buildings' windows could be blown outward into the alley because of temperature differences.
  4. The buildings' windows could be blown inward into the building because of temperature differences.
Grade 9 Fluid Mechanics
You open a cooler to get a soda on a hot summer day and notice a can of diet soda is floating while the cans of regular soda are not floating. What can you infer about this situation? Which is the best statement that describes why?
  1. The water must be flowing upward in the area of the diet soda.
  2. There must be less matter in the regular can of soda.
  3. The diet soda must have less mass per unit of volume than the surrounding water.
  4. The diet soda can must be made of a different kind of material.
Grade 12 Fluid Mechanics
Under what conditions do real gases behave almost like ideal gases?
  1. high temperature, low pressure
  2. high temperature, high pressure
  3. low temperature, high pressure
  4. low temperature, low pressure
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