250 prompts matching "Calculating the work done against gravity"
Physics at work: Reflection and refraction in Nigerian everyday life
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Practice set: The astronomical telescope
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Exam prep: The camera, and how it compares with the eye
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Spot my mistake: The projector and how it throws an enlarged image
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Practice set: The properties common to all electromagnetic waves
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Physics at work: Mobile telephony, satellites and fibre optics
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Exam prep: The frequency, wavelength and amplitude of a sound wave
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Spot my mistake: Reflection of sound and the formation of echoes
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Practice set: Overtones, harmonics and the quality of a note
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Exam prep: Noise and the effect it has on health
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Physics at work: Sound in Nigerian music, broadcasting and building design
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Practice set: Cohesion, adhesion and the forces between molecules
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Exam prep: Surface tension and the effects it produces
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Real-life Nigeria: Molecular forces at work in Nigerian daily life
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Spot my mistake: The variation of g over the earth's surface
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Worked example: Magnetic induction and how it works
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Practice set: The domain theory of magnetism
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Exam prep: The earth's magnetic field and the compass
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Practice set: The field around a straight current-carrying wire
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Exam prep: The field around a solenoid and the right-hand grip rule
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