310 prompts matching "Choosing a hard magnetic material for a transformer core"
Exam prep: The image formed at each object position for a converging lens
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Spot my mistake: Mixing up the sign convention for a diverging lens
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Teach me: The electric field and the force it exerts
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Physics at work: Materials testing as work
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Teach me: The moment of a force about a pivot
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Worked example: Finding an unknown force on a balanced beam
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Practice set: The two conditions for equilibrium
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Exam prep: Problems with several forces acting on a uniform beam
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Exam prep: The energy transformations in a swinging pendulum
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Quiz: The SI units and their symbols
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Quiz: Distance and displacement, and the difference between them
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Quiz: Speed and velocity, and the difference between them
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Quiz: Finding speed from the gradient of a distance-time graph
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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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Quiz: Calculating the kinetic energy of a moving body
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Quiz: Distance, displacement and motion reviewed
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Quiz: The thermometer and the scales it uses
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Quiz: Linear, area and volume expansivity
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Quiz: Good and bad conductors of heat
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