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EXAM GUIDELINE GRADE 12 2014
Newton’s laws and application of Newton’s laws (This section must be read in conjunction with the CAPS, p. 62–66.) Different kinds of forces: weight, normal force, frictional force, applied force (push, pull), tension (strings or cables) • Define normal force, N, as the force or the component of a force which a surface exerts on…
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Force diagrams
See on Scoop.it – PHYSICAL SCIENCES BREAK 1.0 The block on a surface but with an applied force, FL, to the left of 10 N and an applied force, F R, to the right of 20 N. The weight and normal also have magnitudes of 10 N. Chipa Thomas Maimela‘s insight: It is important to keep the following…
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A model of the iron sulphide crystal
See on Scoop.it – PHYSICAL SCIENCES BREAK 1.0 Water (H2O), for example, is a compound that is made up of two hydrogen atoms for every one oxygen atom. Sodium chloride (NaCl) is a compound made up of one sodium atom for every chlorine atom. An important characteristic of a compound is that it has a chemical…
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Components of vectors
See on Scoop.it – PHYSICAL SCIENCES BREAK 1.0 Any vector can be resolved into a horizontal and a vertical component. If R is a vector, then the horizontal component of R is R x and the vertical component is R y. Chipa Thomas Maimela‘s insight: A number of vectors acting together can be combined to give a single vector (the resultant). In much the…
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Conservation of momentum
See on Scoop.it – PHYSICAL SCIENCES BREAK 1.0 When they come into contact, ball 1 exerts a contact force on the ball 2, F B1, and the ball 2 exerts a force on ball 1, F B2. We also know that the force will result in a change in momentum: Chipa Thomas Maimela‘s insight: Definition 1: System A system is…