500 prompts matching "Uses of magnets in Nigerian homes and industry"
Practice set: What circular motion is, and what keeps a body in it
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Quiz: Sorting given quantities into scalars and vectors
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Quiz: Calculating power from work and time
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Let me explain: The watt and the kilowatt-hour
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Worked example: Calculating the power of a machine lifting a load
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Practice set: Efficiency, and why no machine is perfect
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Let me explain: Potential energy and the forms it takes
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Let me explain: Force and circular motion reviewed
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Let me explain: Heat capacity, and how it differs from specific heat capacity
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Quiz: Linear, area and volume expansivity
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Worked example: Calculating the expansion of a metal rod
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Exam prep: Allowing for expansion in bridges, rails and pipes
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Let me explain: Convection and the convection current
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Quiz: Period, frequency and amplitude in an oscillation
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Let me explain: The simple pendulum, and what its period depends on
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Worked example: Calculating the period of a simple pendulum
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Let me explain: How the model accounts for melting and boiling
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Exam prep: Evaporation and the factors affecting its rate
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Spot my mistake: Saying that particles themselves expand when a substance is heated
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Practice set: Charging by contact and charging by induction
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