2,977 prompts matching "work, energy and power"
Worked Example: The common acceleration of two connected particles
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WAEC Prep: A car towing a trailer, and the force in the tow bar
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Worked Example: The normal reaction on a body resting on a smooth incline
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Explain Back: The angle of friction, and the coefficient of friction
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Worked Example: The acceleration of a body moving round a circle at constant speed
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Quiz: The centripetal force, and what supplies it in a given situation
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Final Revision: The period and the frequency of circular motion
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Worked Example: The tension in a stretched elastic string
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Explain Back: The elastic potential energy stored in a stretched string
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Worked Example: Why the square root of a non-square whole number is irrational
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WAEC Prep: Pi and root 2 as the two best-known irrational numbers
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Worked Example: What makes two surds equal
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Explain Back: Why 2 root 3 and 5 root 3 count as similar surds
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Worked Example: Adding two surds that simplify to the same root
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Common Mistakes: Expanding the product of two surd brackets
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Final Revision: Simplifying a fraction whose numerator and denominator are both surds
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Worked Example: Rationalising a denominator that is a single surd
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Worked Example: Why multiplying by the conjugate clears the surd
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Worked Example: Squaring both sides safely when solving a surd equation
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WAEC Prep: Equating the rational and the irrational parts of an equation
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