500 prompts matching "Physics at work: The loudspeaker, and how it turns current into sound"
Practice set: The parallelogram law of vector addition
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Spot my mistake: Forgetting to state the direction of a resultant
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Practice set: Weight as the force of gravity acting on a mass
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Spot my mistake: Pairing forces acting on the same body as action and reaction
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Real-life Nigeria: Simple machines on Nigerian farms and in workshops
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Spot my mistake: Assuming evaporation happens only at the boiling point
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Practice set: Cubic expansivity and superficial expansivity
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Spot my mistake: Forgetting to convert units before an expansivity calculation
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Spot my mistake: Confusing the centre of gravity with the centre of a shape
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Spot my mistake: Confusing the umbra with the penumbra
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Spot my mistake: Applying Snell's law with the two media the wrong way round
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Spot my mistake: Treating a non-ohmic conductor as though it obeyed Ohm's law
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Practice set: The two conditions for equilibrium
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Spot my mistake: Leaving out the weight of the beam itself
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Spot my mistake: Applying gravity to the horizontal component of the motion
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Worked example: Calculating displacement from a described journey
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Real-life Nigeria: Position and displacement in everyday Nigerian journeys
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Worked example: Calculating average speed over a journey
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Practice set: Acceleration and retardation
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Exam prep: The equations of uniformly accelerated motion
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