13.2.2 - Number of Experiments
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Practice Questions
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What is dimensional homogeneity?
💡 Hint: Think about what happens to equations if the dimensions don’t match.
Define Buckingham's Pi Theorem.
💡 Hint: Remember the 'n - k' rule for dimensionless groups.
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Interactive Quizzes
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What is the significance of dimensional homogeneity in fluid mechanics?
💡 Hint: Think of both aspects working together.
True or False: Buckingham's Pi Theorem only applies to experiments in fluid mechanics.
💡 Hint: Consider where else you might see relationships in a physics context.
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Challenge Problems
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You observe that drag force on a flat plate depends on fluid velocity, density, and dynamic viscosity. Develop a dimensionless form that describes this relationship while minimizing experiments.
💡 Hint: Start by identifying which variables are independent and which are dependent in your analysis.
Explain how knowledge of kinematic viscosity can help improve the design of experiments to save time and resources.
💡 Hint: Consider how viscosity influences flow characteristics in various conditions.
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