250 prompts matching "Let me explain: Why a.c. is described by an r.m.s. rather than an average value"
Exam prep: Current in a metallic conductor and in an electrolyte
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Quiz: Oersted's experiment and what it showed
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Quiz: The structure of a transformer and its two coils
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Exam prep: Energy losses in a transformer, and how they are reduced
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Quiz: The Rutherford scattering experiment and what it showed
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Practice set: The domain theory of magnetism
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Real-life Nigeria: Why house wiring uses parallel connection
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Real-life Nigeria: The SS2 Physics topics I still need to practise
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Worked example: Image formation in a plane mirror
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Physics at work: Reflection and refraction in Nigerian everyday life
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Worked example: The compound microscope and how it forms an image
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Real-life Nigeria: Choosing the right optical instrument for a given task
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Worked example: X-rays and gamma rays, their uses and their dangers
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Physics at work: Mobile telephony, satellites and fibre optics
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Worked example: Calculating the speed of sound from an echo
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Practice set: Pitch, loudness and quality as properties of a musical note
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Real-life Nigeria: Resonance and the vibration of air columns
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Physics at work: The range of human hearing, and ultrasound beyond it
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Worked example: Calculating the fundamental frequency of a stretched string
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Practice set: Overtones, harmonics and the quality of a note
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