1. Incident sound waves approach a surface at various angles relative to the surface normal. Reflected sound waves bounce off the surface at equal but opposite angles to the incident waves, respecting the law of reflection.

    Incident sound waves approach a surface at various angles relative to the surface normal. Reflected sound waves bounce off the surface at equal but opposite angles to the incident waves, respecting the law of reflection.

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  2. Cilia in ciliated columnar epithelium help move mucus and other substances along the surface of tissues. Their coordinated beating motion creates directional flow, facilitating processes like debris removal and respiratory mucociliary clearance.

    Cilia in ciliated columnar epithelium help move mucus and other substances along the surface of tissues. Their coordinated beating motion creates directional flow, facilitating processes like debris removal and respiratory mucociliary clearance.

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  3. Driving a car over a bumpy road, a swinging pendulum clock, stirring a mixture of flour in water, shaking a bottle of salad dressing, and snowflakes falling through the air are examples of suspensions.

    Driving a car over a bumpy road, a swinging pendulum clock, stirring a mixture of flour in water, shaking a bottle of salad dressing, and snowflakes falling through the air are examples of suspensions.

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  4. Suspensions form when finely divided particles of one substance are dispersed throughout another substance but do not dissolve. They can result from mechanical mixing, precipitation, or the dispersion of particles in a liquid or gas.

    Suspensions form when finely divided particles of one substance are dispersed throughout another substance but do not dissolve. They can result from mechanical mixing, precipitation, or the dispersion of particles in a liquid or gas.

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  5. Suspensions differ from other mixtures by containing particles that are larger and do not dissolve in the solvent. They exhibit visible settling over time and can be separated through filtration.

    Suspensions differ from other mixtures by containing particles that are larger and do not dissolve in the solvent. They exhibit visible settling over time and can be separated through filtration.

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