O Level Physics: Mechanics, Thermal Physics and Momentum (5054)

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Course content

92 lessons

1.1 · Physical quantities and measurement techniques

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1.2 · Motion

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1.3, 1.5.1-1.5.2 · Mass, weight and forces

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1.5.5-1.5.6 · Turning effect of forces and centre of gravity

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1.4, 1.5.3, 1.8 · Density, elastic deformation and pressure

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Density

Preview10m

Density of a liquid and a regular solid

Preview11m

Density of an irregular solid

11m

Elastic deformation and the spring constant

11m

Load-extension graphs and the limit of proportionality

12m

Pressure

11m

How pressure varies with force and area

10m

Pressure acts at right angles to a surface

10m

Pressure beneath the surface of a liquid

11m

Calculating the change in pressure in a liquid

12m

The liquid barometer

11m

Density, elastic deformation and pressure: practice

Density, elastic deformation and pressure: exam practice

15m

Density, elastic deformation and pressure: summary

1.7.1-1.7.2, 1.7.4-1.7.5 · Energy, work and power

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1.5.4 · Circular motion

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1.6 · Momentum

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1.4, 1.5.3, 1.8 · Density, elastic deformation and pressureLesson 4 of 14

Elastic deformation and the spring constant

Forces change shape. The spring constant is the force for each unit of extension: k = F/x.

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