501 prompts matching "Forgetting to square the velocity in a kinetic energy calculation"
Quiz: Electrical energy, power and cost of consumption
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Teach me: Mechanical advantage, velocity ratio and efficiency
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Practice set: Power and energy problems across appliances
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Quiz: The field pattern of a solenoid and how it resembles a bar magnet
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Practice set: Flux density inside a solenoid from turns, length and current
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Teach me: Alternating current and how it differs from direct current
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Worked example: Finding peak voltage from a stated r.m.s. mains value
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Practice set: A purely resistive a.c. circuit and the phase between V and I
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Real-life Nigeria: Why Nigerian mains is quoted as 220 volts
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Teach me: Inductive reactance and what it depends on
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Practice set: Current and voltage in a series RLC circuit
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Real-life Nigeria: Tuning a radio receiver as an application of resonance
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Let me explain: How an electron transition produces a spectral line
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Real-life Nigeria: The sodium street lamp and the light it emits
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Teach me: The wave-particle duality of light
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Quiz: De Broglie's hypothesis and the matter wave
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Let me explain: Why a cricket ball shows no observable wave behaviour
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Worked example: The de Broglie wavelength of an electron at a stated speed
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Practice set: Comparing de Broglie wavelengths of different particles
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Real-life Nigeria: The electron microscope and why it outresolves a light one
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