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physics paper 2 15th june AQA 2018

What did you guys get?
ANSWERS NOT IN ORDER

the one about vector diagram magnitude= 157, going to the left

1.1 for current

Orbits in 24 hours= 4

frequency= 1.3 (i think im wrong)

wave length =5447 something like that

i got 2500 for one of my calculation idk which one it was

the sound waves didnt refract because they were longitudinal, paralled oscillations and vibrations in direction of energy tranfet and did not go perpendicular to boundary

6marker about force and extension diagramn consisting of = a clamp, metre ruler, hook with weights of 2n etc, an unstretched spring, a heavy mass and pointer (horizontal)
step 1) set up appartaus, heavy mass is so the clamp stand doesnt tilt to minmise inaccuracy
Make sure ruler is vertucal so ir doesn give inaccurate results.
step 2)pointer should be horizontal to give accurate results
step3)measure and record length of unstretched spring, then ad 2N to the hook and measure extension by subtracting the length of the spring by the unstretched spring
step4)jott results down and repeat this for different weights (4N, 6N, 8N, AND 10N)
step 5) repeat whole experiement and calculate a mean extension for each weight.
step 6)peer review data o see other similar results and make a hypothesis if force is directly proprtional to the extension

Question about uncertainty= 5

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