464 prompts matching "Exam prep: Gravitational potential energy and escape velocity"
Practice set: The parallelogram law of vector addition
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Spot my mistake: Forgetting to state the direction of a resultant
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Physics at work: Where vector work is used in Nigerian engineering
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Spot my mistake: Assuming friction always opposes useful motion
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Practice set: Finding distance from the area under a graph
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Spot my mistake: Using an equation of motion with the wrong sign for deceleration
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Physics at work: Motion measurement in vehicle safety testing
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Practice set: Weight as the force of gravity acting on a mass
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Practice set: The principle of conservation of linear momentum
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Spot my mistake: Ignoring direction when adding momenta
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Spot my mistake: Assuming a machine can be one hundred per cent efficient
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Spot my mistake: Assuming evaporation happens only at the boiling point
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Spot my mistake: Forgetting to convert units before an expansivity calculation
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Physics at work: Allowing for expansion in construction work
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Spot my mistake: Claiming that radiation needs a medium
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Quiz: Locating the centre of gravity of a regular body
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Spot my mistake: Confusing the centre of gravity with the centre of a shape
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Spot my mistake: Assuming pressure depends on the volume of liquid
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Physics at work: Hydraulics in Nigerian engineering
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Spot my mistake: Confusing the umbra with the penumbra
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