500 prompts matching "Let me explain: Plotting the field around a bar magnet"
Worked example: Calculating the impulse delivered in a collision
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Spot my mistake: Ignoring direction when adding momenta
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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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Real-life Nigeria: Solar energy in Nigerian homes
Act as my SS1 Physics tutor. Show me where solar energy in Nigerian homes turns up in Nige
Practice set: The pulley system and its velocity ratio
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Worked example: Calculating the heat needed to boil a mass of water
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Spot my mistake: Assuming evaporation happens only at the boiling point
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Worked example: Calculating the increase in length of a heated rod
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Practice set: Radiation, and the surfaces that emit and absorb best
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Spot my mistake: Claiming that radiation needs a medium
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Real-life Nigeria: Keeping a Nigerian home cool without air conditioning
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Worked example: A balancing problem solved using the centre of gravity
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Spot my mistake: Confusing the centre of gravity with the centre of a shape
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Worked example: Calculating the pressure at a given depth
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Practice set: The hydraulic press, and the principle Pascal gave it
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Worked example: Calculating the size of a shadow cast by a point source
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Spot my mistake: Confusing the umbra with the penumbra
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Spot my mistake: Drawing the reflected ray on the wrong side of the normal
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Worked example: Finding refractive index from a pair of measured angles
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