442 prompts matching "Current gain of a transistor from given base and collector currents"
Exam prep: Conduction, convection and radiation compared
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Physics at work: Insulation and building design in Nigeria
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Let me explain: Finding the centre of gravity of an irregular lamina
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Worked example: A balancing problem solved using the centre of gravity
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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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Teach me: Density and relative density defined
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Let me explain: Pressure in a liquid, and what it depends on
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Worked example: Calculating the pressure at a given depth
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Real-life Nigeria: Hydraulic brakes and jacks in Nigerian vehicles
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Teach me: How light travels, and the evidence that it goes in straight lines
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Worked example: Calculating the size of a shadow cast by a point source
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Real-life Nigeria: Shadows and sunlight in Nigerian building design
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Let me explain: The characteristics of an image formed in a plane mirror
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Worked example: Finding the number of images formed by two inclined mirrors
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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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Let me explain: Refractive index and how it is measured
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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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