1,334 prompts matching "Learn: Why a surd is never left in the denominator"
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Worked Example: The moment of a force about a point on its own line of action
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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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Spot My Mistake: When Lami's theorem may be used, and when it may not
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Spot My Mistake: Drawing a vector as a directed line segment
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Worked Example: Finding the unit vector in the direction of a given vector
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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 position vector of the midpoint of AB
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Practice: The dot product as the magnitudes times the cosine of the angle
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Practice: Deciding whether a point lies on a given line
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Practice: The argument of a complex number in the second or third quadrant
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Worked Example: Classifying a stationary point by the sign of the gradient either side
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Worked Example: Power as the rate of doing work
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Spot My Mistake: The sum of the first n terms of an arithmetic progression
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Worked Example: Finding the first term and the common difference from two given terms
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Practice: The sum to infinity of a convergent geometric series
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Quiz me on 2x2 and 3x3 determinants together
Quiz me with two questions, one 2x2 determinant and one 3x3 determinant, mark both, and te
Explain the conditions for equilibrium of a rigid body
I am in SS 3. Explain the principal conditions needed for a rigid body to be in equilibriu
Explain the difference between scalar and vector product
I am in SS 3. Explain clearly the difference between the dot (scalar) product and the cros
Spot my mistake finding a vector magnitude
I am in SS 3. I calculated the magnitude of a 3D vector but I'm not confident I squared an