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2 cards from this section. Quick, good the night before a test.
What is capillary rise?
Think about how water rises in a straw.
What causes surface tension?
Consider the attraction between water molecules.
What is the main reason for capillary rise?
Think about what keeps the liquid climbing up the tube against gravity.
True or False: Mercury will rise in a glass tube due to capillary action.
Remember how mercury behaves compared to water.
A glass capillary tube has a radius of 0.003 m. Calculate the height to which water will rise in it if the surface tension of water is 0.072 N/m and the density of water is 1000 kg/m³.
Ensure to apply the correct values and use cos(θ) as 1 if it is not stated otherwise.
Explain how capillary rise can differ in two capillaries of the same radius but with fluids of different surface tensions.
Consider comparing water and oil under similar conditions.
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