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Questions and Answers
What is the pressure exerted by a fluid on an object, per unit area of the object?
What is the pressure exerted by a fluid on an object, per unit area of the object?
What is the purpose of weather forecasting?
What is the purpose of weather forecasting?
Which of the following statements about Archimedes' Principle is true?
Which of the following statements about Archimedes' Principle is true?
Atmospheric pressure is caused by the __________ of air molecules on the Earth's surface.
Atmospheric pressure is caused by the __________ of air molecules on the Earth's surface.
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A swimmer experiences an upward force while swimming in a pool due to __________?
A swimmer experiences an upward force while swimming in a pool due to __________?
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Study Notes
Fluid Pressure
- Fluid pressure is defined as the force exerted per unit area on an object immersed in a fluid (liquid or gas)
- Pressure increases with depth and depends on the density of the fluid
- Pressure is same in all directions at a given point in a fluid
Buoyant Force
- Buoyant force is the upward force exerted by a fluid (liquid or gas) on an object partially or fully immersed in it
- Buoyant force depends on the volume of the fluid displaced, density of the fluid, and acceleration due to gravity
- Buoyant force is responsible for objects floating or sinking in a fluid
Atmospheric Pressure
- Atmospheric pressure is the pressure exerted by the weight of air in the atmosphere on the surface of the Earth
- Atmospheric pressure decreases with altitude and increases with weather changes
- Atmospheric pressure is measured in units of pascals (Pa) or millibars (mbar)
Weather Forecasting
- Weather forecasting uses atmospheric pressure data to predict weather patterns and changes
- Low atmospheric pressure indicates bad weather, while high atmospheric pressure indicates good weather
- Changes in atmospheric pressure can indicate weather changes such as storms or fair weather
Archimedes' Principle
- Archimedes' Principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object
- The principle is used to calculate the buoyant force and density of an object in a fluid
- Archimedes' Principle has many practical applications in engineering, physics, and everyday life
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Description
Test your understanding of fluid pressure, buoyant force, atmospheric pressure, and Archimedes' principle. This quiz covers the basics of fluid mechanics and its applications, as per the Bhutanese Class 9 physics textbook. Check your knowledge of these fundamental concepts and see how well you can apply them to real-world problems.
