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Physics July 2016 Preparing for A-Level Physics Listed below are some tasks that we would like you to do before you come back in September. Please do them to the best of your ability. You will need to bring them to your first lesson in September as you will be using some of them in the lesson! TASKS Tick when complete 1. Research the definitions. 2. Watch the Veritasium video on YouTube about the pure Silicon sphere and the redefinition of the kilogramme. 3. Complete the tables on base quantities and units. 4. Complete the table of standard prefixes and their multiplying factors. 5. Complete the questions on triangles using trigonometry and Pythagoras. 6. Complete the rearranging equations task. Complete these definitions (you may need to research some of these on the internet): Quantity Unit Base unit Prefix Vector Scalar Component (of a vector) Systematic error Random error Precision Accuracy Draw, Label, Explain Watch the following video https://www.youtube.com/watch?v=ZMByI4s-D-Y Complete the table showing the SI base units Quantity Base unit Time Unit symbol s second Complete the table showing the prefixes for SI units Prefix Name peta Prefix symbol Factor tera giga mega kilo deci centi milli micro nano pico femto k x 103 Triangles in Physics (Trigonometry and Pythagoras) You will be very familiar with trigonometry and Pythagoras’ theorem from GCSE maths! In A-level Physics, they also play a large part. 1. Find x and H in the right-angled triangle below. 2. Find the lengths of all sides of the right-angled triangle below if its area is 400cm2. 3. BH is perpendicular to AC. Find x, the length of BC. 4, ABC is a right-angled triangle with a right angle at A. Find x the length of DC. 5. Find the length of segment BD. 12 MATHS PRACTICE - Transposition (rearranging) of Equations 1. 𝑣 2 – 𝑢2 = 2𝑎𝑠 𝑠= 2. 𝑣 2 – 𝑢2 = 2𝑎𝑠 𝑣= 3. 𝑠 = 𝑢𝑡 + 1 2 𝑎𝑡 2 𝑎= 4. 𝑠 = 𝑢𝑡 + 1 2 𝑎𝑡 2 𝑢= 5. 𝐼 = 𝑛𝐴𝑞𝑣 𝑣= 6. 𝑙 𝑇 = 2𝜋√ 𝑔 𝑔 = 7. 1 𝑄𝑉 = 𝑚𝑣 2 2 𝑣= 8. 𝐹 = 6𝜋𝑟𝑣 = 9. 𝑛 = 𝑑 sin 𝜃 𝜃= 10. 𝑉= 4 𝜋𝑟 3 3 𝑟= 11. 𝐴 = 4𝜋𝑟 2 𝑟 = 𝐸= 12. 13. 𝐿 = 4𝜋𝑟 2 𝑇 4 𝐼= 14. 15. 𝐹𝑙 𝐴𝑒 ℎ𝑐 𝑃 4𝜋𝑟 2 1 = ∅ + 𝑚𝑣 2 2 𝑒= 𝑇= 𝑟= 𝑣=