1,324 prompts matching "Distributivity on a set of three elements"
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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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Explain Back: Locating the point of concurrence on a diagram
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Spot My Mistake: Using concurrence to find the direction of an unknown third force
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Practice: Resolving three forces in two perpendicular directions
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Spot My Mistake: Finding two unknown tensions from three forces in equilibrium
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Learn: The expectation of a discrete random variable
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Learn: Finding the coefficient of a stated power in an expansion
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Practice: The probability of at least one success
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Practice: The probability of exactly r events in a Poisson distribution
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Practice: The variance of a binomial distribution as npq
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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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Quiz: The probability in the upper tail of a normal distribution
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Quiz: Reading the wording of a question to decide which distribution applies
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Practice: The components of a vector given its magnitude and direction
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