434 prompts matching "Quiz: Recall of reactance and impedance formulae"
Worked example: Calculating the efficiency of an energy transfer
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Practice set: Sankey diagrams and how to read them
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Teach me: What a machine is, and what it does
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Let me explain: The lever and its three classes
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Worked example: Calculating the mechanical advantage of a lever
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Practice set: The pulley system and its velocity ratio
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Exam prep: The inclined plane, the screw, and the wheel and axle
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Real-life Nigeria: Simple machines on Nigerian farms and in workshops
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Physics at work: Machine design and maintenance as work
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Teach me: Thermal energy, and how it differs from temperature
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Worked example: Calculating the heat needed to boil a mass of water
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Practice set: Evaporation, and how it differs from boiling
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Physics at work: Refrigeration and air conditioning as trades
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Teach me: Why matter expands when it is heated
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Let me explain: Linear expansivity and its definition
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Worked example: Calculating the increase in length of a heated rod
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Practice set: Cubic expansivity and superficial expansivity
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Real-life Nigeria: Expansion gaps in Nigerian bridges and railways
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Let me explain: Convection currents and how they form
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Worked example: Explaining the heating of a room by convection
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