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A mass is resting on a rough plane. Given the angle of the plane and the mass of the object, find the normal reaction force and hence the coefficient of friction.

Find the $x$ and $y$ components of the resultant force on an object, when multiple forces are applied at different angles.

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This question tests a student's ability to add two fractions with the same denominator.

This question tests a student's ability to raise a positive base to a negative exponent.

This question asks a student to draw a straight line graph by dragging points.

This question tests a student's ability to raise a negative base to a negative exponent.

Lay out gapfills so the student has to enter either the numerator or denominator of a fraction.

The student is asked to factorise a quadratic $x^2 + ax + b$. A custom marking script uses pattern matching to ensure that the student's answer is of the form $(x+a)(x+b)$, $(x+a)^2$, or $x(x+a)$.

To find the script, look in the Scripts tab of part a.

A randomised table is contained in a div tag with the id #sales-table, so it can be styled using the CSS preamble.