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Questions and Answers
What is the upward force exerted by a fluid that opposes the weight of a partially or fully immersed object known as?
What is the upward force exerted by a fluid that opposes the weight of a partially or fully immersed object known as?
- Tension force
- Inertial force
- Buoyancy (correct)
- Frictional force
What does the pressure at the bottom of a column of fluid compared to the pressure at the top of the column?
What does the pressure at the bottom of a column of fluid compared to the pressure at the top of the column?
- Greater at the bottom (correct)
- Depends on the density of the fluid
- Less at the bottom
- Equal at both top and bottom
What is the magnitude of the buoyant force proportional to?
What is the magnitude of the buoyant force proportional to?
- The density of the fluid
- The pressure difference (correct)
- The weight of the object
- The volume of the object
What is the most common driving force of convection currents in fluid mixtures?
What is the most common driving force of convection currents in fluid mixtures?
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In which reference frame can buoyancy occur?
In which reference frame can buoyancy occur?
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Study Notes
Buoyancy and Fluids
- The upward force exerted by a fluid that opposes the weight of a partially or fully immersed object is known as buoyancy.
Pressure in Fluids
- The pressure at the bottom of a column of fluid is greater than the pressure at the top of the column.
Buoyant Force
- The magnitude of the buoyant force is proportional to the density of the fluid, the volume of the displaced fluid, and the gravitational acceleration.
Convection Currents
- The most common driving force of convection currents in fluid mixtures is differences in density.
Reference Frame for Buoyancy
- Buoyancy can occur in any reference frame, including a stationary or moving reference frame.
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