429 prompts matching "A quadratic whose two roots are both negative"
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Explain Back: The order in which the forces are drawn round the triangle
I have just studied the order in which the forces are drawn round the triangle in my SS3 F
WAEC Prep: The two conditions for a rigid body to be in equilibrium
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Practice: Why the forces must sum to nought in two perpendicular directions
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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
I have just studied the units of a moment, and why they are newton metres in my SS3 Furthe
WAEC Prep: The moment of two equal and opposite parallel forces
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WAEC Prep: The total moment of two forces about the same point
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Practice: Resolving three forces in two perpendicular directions
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Explain Back: A particle hanging from two strings set at different angles
I have just studied a particle hanging from two strings set at different angles in my SS3
Spot My Mistake: Finding two unknown tensions from three forces in equilibrium
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WAEC Prep: A lamp hanging from two wires, solved by Lami's theorem
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WAEC Prep: The probabilities of nought, one and two successes read off an expansion
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WAEC Prep: The variance of a Poisson distribution over two intervals
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WAEC Prep: Why the mean and the variance of a Poisson distribution are equal
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Explain Back: Testing whether data are Poisson by comparing mean and variance
I have just studied testing whether data are Poisson by comparing mean and variance in my
WAEC Prep: Why the total area under the normal curve is one
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Quiz: The area under the normal curve, and what it represents
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Spot My Mistake: The proportion of a normal distribution within one, two and three standard deviations
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