250 prompts matching "Calculating the work done against gravity"
Spot my mistake: The errors most often made in second-term SS2 Physics
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Practice set: The force between two parallel current-carrying conductors
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Exam prep: The simple d.c. motor and how it turns
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Spot my mistake: Confusing Fleming's left-hand rule with the right-hand rule
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Practice set: The efficiency of a transformer
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Exam prep: Energy losses in a transformer, and how they are reduced
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Spot my mistake: Assuming a transformer can work on direct current
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Real-life Nigeria: Transformers in Nigeria's power transmission network
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Physics at work: Why electricity is transmitted at high voltage
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Practice set: The Bohr model and electron energy levels
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Exam prep: The models of the atom compared, from Thomson to Bohr
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Worked example: Writing an equation for alpha decay and for beta decay
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Practice set: The Geiger-Muller tube and how it detects radiation
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Exam prep: The cloud chamber and the photographic plate as detectors
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Practice set: The decay constant and the activity of a source
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Exam prep: Carbon dating and how it works
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Physics at work: Nuclear energy, its uses and its dangers
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Practice set: The seasons, and what produces them
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Exam prep: The earth's gravitational field and its effects
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Spot my mistake: The greenhouse effect and the ozone layer
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