365 prompts matching "How a rocket accelerates by expelling mass"
Worked example: Calculating the mechanical advantage of a lever
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Practice set: The pulley system and its velocity ratio
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Exam prep: The inclined plane, the screw, and the wheel and axle
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Spot my mistake: Assuming a machine can be one hundred per cent efficient
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Real-life Nigeria: Simple machines on Nigerian farms and in workshops
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Exam timing: A timed set of machine calculations
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Physics at work: Machine design and maintenance as work
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Exam prep: The factors affecting the rate of evaporation
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Spot my mistake: Assuming evaporation happens only at the boiling point
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Exam timing: A timed set of heat calculations
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Physics at work: Refrigeration and air conditioning as trades
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Worked example: Calculating the increase in length of a heated rod
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Practice set: Cubic expansivity and superficial expansivity
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Exam prep: The anomalous behaviour of water between zero and four degrees
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Spot my mistake: Forgetting to convert units before an expansivity calculation
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Real-life Nigeria: Expansion gaps in Nigerian bridges and railways
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Exam timing: A timed set of expansion problems
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Physics at work: Allowing for expansion in construction work
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Practice set: Radiation, and the surfaces that emit and absorb best
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Exam prep: Conduction, convection and radiation compared
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