Edexcel triple physics paper unofficial markscheme 2019 Watch

IsMo987
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Post ur answers and opinions
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GurlSheThic
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(Original post by IsMo987)
Post ur answers and opinions
These are the answers I can remember
- Some massive number with loads of 8's
- For the clapping one i suggested increasing distance, using a computer and microphone to detect the waves, and repeat it 3 times (I didn't know at all so I just wrote these 3 hoping one would be right)
- 5 times bigger (I think?). All waves travel the same speed in a vacuum
- On the space 6 marker i wrote about redshift and CMB radiation
- Gamma rays produced to make the nucleus from an excited state to a more stable state, radio waves produced by the alternating current stuff
- I said for the measurements, use a ruler to measure the distance, weigh the mass of the trolley by itself and then with 1 masses, 2 masses etc.
- Tracers are created near to hospital because they have a short half-life and therefore the activity falls quickly
- Background radiation comes from food building materials rocks
- Something about beta-minus emission I think?
- Geiger-muller tube
- With the practical about finding the critical angle I talked about shining a ray box into the prism and measure the angle between the light ray and the normal, if light goes through the other end the critical angle is more than the incident ray if none comes out the critical angle is less than the incident ray, keep decreasing and increasing the angle of the incident ray until the ray goes along the surface? I'm not sure if that one's right though
These are just what I put idk if they're right
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IsMo987
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(Original post by GurlSheThic)
These are the answers I can remember
- Some massive number with loads of 8's
- For the clapping one i suggested increasing distance, using a computer and microphone to detect the waves, and repeat it 3 times (I didn't know at all so I just wrote these 3 hoping one would be right)
- 5 times bigger (I think?). All waves travel the same speed in a vacuum
- On the space 6 marker i wrote about redshift and CMB radiation
- Gamma rays produced to make the nucleus from an excited state to a more stable state, radio waves produced by the alternating current stuff
- I said for the measurements, use a ruler to measure the distance, weigh the mass of the trolley by itself and then with 1 masses, 2 masses etc.
- Tracers are created near to hospital because they have a short half-life and therefore the activity falls quickly
- Background radiation comes from food building materials rocks
- Something about beta-minus emission I think?
- Geiger-muller tube
- With the practical about finding the critical angle I talked about shining a ray box into the prism and measure the angle between the light ray and the normal, if light goes through the other end the critical angle is more than the incident ray if none comes out the critical angle is less than the incident ray, keep decreasing and increasing the angle of the incident ray until the ray goes along the surface? I'm not sure if that one's right though
These are just what I put idk if they're right
Yh i got some similar ones as well wat did u get for how many years one and the one where u had to find the value of c using the graph
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GurlSheThic
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(Original post by IsMo987)
Yh i got some similar ones as well wat did u get for how many years one and the one where u had to find the value of c using the graph
can't remember. I got that the half life halfed 4 times and I probably timesed 4 by however much time it took for 1 half life. cant remember anything about c
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Wetforgery
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C=12.5
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Wetforgery
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Half life you times by 3
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Beth03
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Yeah I got that but I tried with different numbers and it came out like 13.3 so I just compromised with 13 🤦🏼*♀️
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OofBerry
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(Original post by GurlSheThic)
- For the clapping one i suggested increasing distance, using a computer and microphone to detect the waves, and repeat it 3 times (I didn't know at all so I just wrote these 3 hoping one would be right)
It said one reason in bold so not sure if you lose marks for putting more or not. I put increasing distance as my answer.
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hehe_x
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I got c = 13.02
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doctortrollface
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what was the answer for the very first question my dudes?
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Dayo03
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i got B
(Original post by doctortrollface)
what was the answer for the very first question my dudes?
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hehe_x
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I got A (very first ques)
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GurlSheThic
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Same
(Original post by hehe_x)
I got A (very first ques)
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