Learn: Energy Transfers and Efficiency
AQA GCSE Physics 8463
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What does the law of conservation of energy state?
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Efficiency is calculated using the formula: Efficiency = ({{blank0}} ÷ {{blank1}}) × 100
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Which of the following methods can increase efficiency? (Select all that apply)
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A machine takes in 200 J of energy and outputs 50 J of useful energy. What is its efficiency?
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