1,231 prompts matching "IGCSE Additional Maths Y10: How many points of intersection there are — Worked E"
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Learn: What an unclosed polygon of forces tells you
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Quiz: The coefficient of friction between two surfaces
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Spot My Mistake: Why friction does not depend on the area of contact
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Spot My Mistake: The moment of a force whose line of action is not perpendicular
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Explain Back: The units of a moment, and why they are newton metres
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Worked Example: The total moment of three parallel forces about one end
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Learn: The algebraic sum of moments when the senses differ
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Spot My Mistake: Using concurrence to find the direction of an unknown third force
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Quiz: A rod resting against a wall, and the concurrence of its three forces
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Worked Example: Matching each force to the sine of the angle opposite it
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WAEC Prep: A probability distribution shown as a bar chart
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Learn: The expectation of a discrete random variable
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Worked Example: Finding a particular term of a binomial expansion
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Learn: Finding the coefficient of a stated power in an expansion
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Spot My Mistake: The probability of exactly r successes in n trials
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Worked Example: The probability of no events at all in a Poisson distribution
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Learn: The standard deviation of a binomial distribution
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Quiz: The standard deviation of a Poisson distribution
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Learn: The mean, median and mode of a normal distribution
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Spot My Mistake: The proportion of a normal distribution within one, two and three standard deviations
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