New 12 - Revision 1misssugarscience.weebly.com/.../97036086/12_-_revision_1.pdf · 2019. 10. 2. ·...
Transcript of New 12 - Revision 1misssugarscience.weebly.com/.../97036086/12_-_revision_1.pdf · 2019. 10. 2. ·...
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REVISION
BRING EVERY LESSON FROM NOW ON!• AQA Textbook• Revision Pack• Revision Guides• AQA Specification**
• You will need to print this at homehttp://www.aqa.org.uk/subjects/science/as-and-a-level/physics-7407-7408
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THINGS TO REVISE
• Practical skill questions• Error analysis questions• Reading instruments• Graph drawing skills, gradient calculations• Key words• One mark questions
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EXAMINER’S NOTES
This question was more demanding than most of those in the first half of this paper. In this question required the simple facts that F = EQ in an electric field and F = mg in a gravitational field, but was also a synoptic test of resolving forces in an equilibrium situation. This was complicated by the need to choose an incorrect equation. More than a fifth of the candidates did not see that resolving along the direction of the thread would lead to the expression in distractor B being correct.
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resolving one force correctly –410 sin (65) seenC1doubling the force (eg 743.1 or 346.5 seen)C12 sf answer (740 (N) or 370 (N))A1[3]
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