1,328 prompts matching "Learn: What an identity element is"
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Worked Example: Marking the weight, the normal reaction and the friction on a diagram
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Worked Example: Using the sine rule on the triangle of forces
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Practice: Finding an unknown force from a closed polygon
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Practice: Limiting friction, and the greatest value it can reach
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Spot My Mistake: Why friction does not depend on the area of contact
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Quiz: A rod resting against a wall, and the concurrence of its three forces
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Spot My Mistake: Finding two unknown tensions from three forces in equilibrium
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Worked Example: Matching each force to the sine of the angle opposite it
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Worked Example: Finding a particular term of a binomial expansion
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Practice: Using a binomial expansion to approximate a number
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Spot My Mistake: The probability of exactly r successes in n trials
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Practice: The components of a vector given its magnitude and direction
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Spot My Mistake: Drawing a vector as a directed line segment
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Spot My Mistake: The vector from A to B as the difference of two position vectors
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Worked Example: The triangle law of vector addition
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Practice: The dot product as the magnitudes times the cosine of the angle
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Spot My Mistake: The equilibrium condition written in vector form
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Worked Example: The powers of i, and the cycle they follow
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Quiz: Subtracting one complex number from another
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Practice: Equating real and imaginary parts to find two unknowns
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