500 prompts matching "Let me explain: Why no machine reaches one hundred per cent efficiency"
Practice set: Stable, unstable and neutral equilibrium
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Exam prep: The conditions that make a body stable
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Real-life Nigeria: Stability in Nigerian lorries and market stalls
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Physics at work: Stability in vehicle and structure design
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Practice set: The hydraulic press, and the principle Pascal gave it
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Real-life Nigeria: Hydraulic brakes and jacks in Nigerian vehicles
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Physics at work: Hydraulics in Nigerian engineering
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Exam prep: Eclipses of the sun and of the moon
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Real-life Nigeria: Shadows and sunlight in Nigerian building design
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Physics at work: Optics as a field of work
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Quiz: The laws of reflection stated
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Practice set: Curved mirrors, concave and convex
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Exam prep: Ray diagrams for a concave mirror
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Real-life Nigeria: Concave and convex mirrors in Nigerian use
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Physics at work: Mirrors in telescopes and in vehicle design
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Quiz: The laws of refraction stated
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Practice set: Real depth and apparent depth compared
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Exam prep: The critical angle and the condition for total internal reflection
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Real-life Nigeria: Optical fibres and the periscope
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Physics at work: Fibre optics in Nigerian communications
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