500 prompts matching "The photoelectric effect and what is observed"
Exam prep: Resolving a vector into horizontal and vertical components
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Real-life Nigeria: Vectors in describing wind and current
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Quiz: Random, rotational, oscillatory and translational motion
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Let me explain: Force as the cause of a change in motion
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Spot my mistake: Assuming friction always opposes useful motion
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Exam timing: A timed set of questions on force and friction
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Quiz: Uniform velocity and uniform acceleration
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Practice set: Weight as the force of gravity acting on a mass
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Practice set: The principle of conservation of linear momentum
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Spot my mistake: Ignoring direction when adding momenta
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Real-life Nigeria: Crumple zones and safety in Nigerian vehicles
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Spot my mistake: Describing energy as being used up
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Exam timing: A timed set of energy and efficiency questions
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Spot my mistake: Assuming a machine can be one hundred per cent efficient
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Real-life Nigeria: Simple machines on Nigerian farms and in workshops
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Practice set: Evaporation, and how it differs from boiling
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Exam prep: The factors affecting the rate of evaporation
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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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Real-life Nigeria: Expansion gaps in Nigerian bridges and railways
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