250 prompts matching "Physics at work: Where vector work is used in Nigerian engineering"
Let me explain: Lenz's law and the direction of an induced current
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Quiz: Oersted's experiment and what it showed
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Let me explain: Series and parallel circuits reviewed
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Quiz: Fleming's left-hand rule
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Let me explain: Step-up and step-down transformers
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Quiz: The decay curve, and reading a half-life from it
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Quiz: The planets and the order in which they orbit
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Let me explain: Kepler's laws of planetary motion
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Quiz: Nuclear fusion in the core of a star
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Let me explain: The life cycle of a star
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Let me explain: The expanding universe and red shift
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Exam prep: The camera, and how it compares with the eye
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Exam prep: The frequency, wavelength and amplitude of a sound wave
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Exam prep: Surface tension and the effects it produces
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Exam prep: The earth's magnetic field and the compass
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Exam prep: The field around a solenoid and the right-hand grip rule
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Exam prep: Electrical energy, power and the cost of consumption
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Exam prep: The relay and the telephone earpiece
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Exam prep: The magnetic effect of an electric current reviewed
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Exam prep: The simple d.c. motor and how it turns
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