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Physics P1 - 3 OCR Gateway B GCSE Official Discussion Thread
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Chittesh14
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#1
Official Edexcel GCSE Physics OCR (P1 - P3) Exam Discussion Thread
- Date: 15th June 2015
- Time: PM
- Duration: 1h 15m
Remember, we still have time to revise. It's not all over.
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Chittesh14
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#2
Locyce
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Chittesh14
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#4
(Original post by Locyce)
Equations for P3! As well as nuclear power
Equations for P3! As well as nuclear power
I hope they throw something idiotic and simple like.
Derive the formula of 'power' and link it to 'force'.
I can almost bet that 'stars' are coming up - strong feeling idk why.
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Locyce
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#5
They will be a couple of simple ones. But there will be one really hard one! Possibly worth 3 marks.
Stars? I hope you're right, imagine a lovely 6 marker on it!
Stars? I hope you're right, imagine a lovely 6 marker on it!
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Chittesh14
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#6
(Original post by Locyce)
They will be a couple of simple ones. But there will be one really hard one! Possibly worth 3 marks.
Stars? I hope you're right, imagine a lovely 6 marker on it!
They will be a couple of simple ones. But there will be one really hard one! Possibly worth 3 marks.
Stars? I hope you're right, imagine a lovely 6 marker on it!
.I've revised P2 now, I haven't done P1 at all and same with P3 pretty much :/.
I think I can do P1 now in a hour and manage P3 tomorrow morning alongside with a P1 recap.
What do you predict for the 6 markers for P2?
I haven't really done any past paper, but it could be so many things tbh.
- Factors that affect the current or electricity output from a photocell.
or even - How does a photocell work and what factors could maximise the current output of a photocell?
- How does passive solar heating work?
- How is a current generated inside a dynamo and how can you increase the current from a dynamo?
- How do power/nuclear stations generate electricity?
- Calculations on cost of electrical appliances and possibly relation to off-peak electricity, how could it save the cost? (Applying knowledge question)
- The transmission of electricity along the National Grid (advantages) and why high voltage is used (explanation of effects of current in terms of energy loss)
- Advantages and disadvantages of nuclear power stations
- Effects of ionisation and link to the three types of radiation
- Uses of either types of radiations and which one be used or something like that
- Comparison of the radiation uses e.g. gamma for killing cancer cells or non-destructive testing
- Manned spacecraft
- Comet's speed, orbit and possibly about the tail lol (ice core melting etc)
- Universal theories
- Red shift and link to galaxies expanding
- Life of a star
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ellamoon_22
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Vanilla Cupcake
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feeling good about p123, should be a nice exam 
i want a six marker on the life cycle of a star since i don't think it's ever been asked (and i know it well lmao)
are there any equations we need to know that we don't get on the formula sheet?
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i want a six marker on the life cycle of a star since i don't think it's ever been asked (and i know it well lmao)are there any equations we need to know that we don't get on the formula sheet?
Posted from TSR Mobile
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username1863871
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#9
I found that quite challenging? More because of the overload of data and things you could write than not having enough to write about though... What did people get for the radioactive sources? I got something like gamma, alpha, beta, gamma
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Vanilla Cupcake
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#10
(Original post by HouseOfRichman)
I found that quite challenging? More because of the overload of data and things you could write than not having enough to write about though... What did people get for the radioactive sources? I got something like gamma, alpha, beta, gamma
I found that quite challenging? More because of the overload of data and things you could write than not having enough to write about though... What did people get for the radioactive sources? I got something like gamma, alpha, beta, gamma
overall a very good paper, messed up a few times (especially with the calculations which i'm supposed to be good at haha) but hoping for a* here
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Grogan_OG
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#11
(Original post by Vanilla Cupcake)
i got that too but people are saying the last one was alpha and gamma?
overall a very good paper, messed up a few times (especially with the calculations which i'm supposed to be good at haha) but hoping for a* here
i got that too but people are saying the last one was alpha and gamma?
overall a very good paper, messed up a few times (especially with the calculations which i'm supposed to be good at haha) but hoping for a* here
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mxskaan
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#12
Posted on another thread too but for calculations I got:
1800J for wasted energy
60% efficiency
60 degrees for water and 40 degrees for plastic beaker
7.83A for the highest current (oven)
2m/s^2 for acceleration
280,000J for workdone and 56,000 watts for power
540p for the kwh question
Posted from TSR Mobile
1800J for wasted energy
60% efficiency
60 degrees for water and 40 degrees for plastic beaker
7.83A for the highest current (oven)
2m/s^2 for acceleration
280,000J for workdone and 56,000 watts for power
540p for the kwh question
Posted from TSR Mobile
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Vanilla Cupcake
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#13
(Original post by Grogan_OG)
I got the same for the radiation one but the double glazing one didnt make much sense because double glazing is supposed to stop heat transfer but instead it allowed it in the question? I just wrote about the different methods of heat transfer
I got the same for the radiation one but the double glazing one didnt make much sense because double glazing is supposed to stop heat transfer but instead it allowed it in the question? I just wrote about the different methods of heat transfer
forgot to convert to kilowatts 😧
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-AN-
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#14
(Original post by HouseOfRichman)
I found that quite challenging? More because of the overload of data and things you could write than not having enough to write about though... What did people get for the radioactive sources? I got something like gamma, alpha, beta, gamma
I found that quite challenging? More because of the overload of data and things you could write than not having enough to write about though... What did people get for the radioactive sources? I got something like gamma, alpha, beta, gamma
I thought the P3 section was easier than last years, how about you ?
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mxskaan
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#15
(Original post by Vanilla Cupcake)
double glazing stops conduction, doesn't it? i just started talking about how conduction works lmao
well **** then
forgot to convert to kilowatts 😧
double glazing stops conduction, doesn't it? i just started talking about how conduction works lmao
well **** then
forgot to convert to kilowatts 😧
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-AN-
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(Original post by Grogan_OG)
I got the same for the radiation one but the double glazing one didnt make much sense because double glazing is supposed to stop heat transfer but instead it allowed it in the question? I just wrote about the different methods of heat transfer
I got the same for the radiation one but the double glazing one didnt make much sense because double glazing is supposed to stop heat transfer but instead it allowed it in the question? I just wrote about the different methods of heat transfer
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username1863871
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(Original post by mxskaan)
Posted on another thread too but for calculations I got:
1800J for wasted energy
60% efficiency
60 degrees for water and 40 degrees for plastic beaker
7.83A for the highest current (oven)
2m/s^2 for acceleration
280,000J for workdone and 56,000 watts for power
540p for the kwh question
Posted from TSR Mobile
Posted on another thread too but for calculations I got:
1800J for wasted energy
60% efficiency
60 degrees for water and 40 degrees for plastic beaker
7.83A for the highest current (oven)
2m/s^2 for acceleration
280,000J for workdone and 56,000 watts for power
540p for the kwh question
Posted from TSR Mobile
I got something like 14p! Oh an I got 560,000J, again probably my error
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ellamoon_22
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JoeR12345
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#19
(Original post by mxskaan)
Posted on another thread too but for calculations I got:
1800J for wasted energy
60% efficiency
60 degrees for water and 40 degrees for plastic beaker
7.83A for the highest current (oven)
2m/s^2 for acceleration
280,000J for workdone and 56,000 watts for power
540p for the kwh question
Posted from TSR Mobile
Posted on another thread too but for calculations I got:
1800J for wasted energy
60% efficiency
60 degrees for water and 40 degrees for plastic beaker
7.83A for the highest current (oven)
2m/s^2 for acceleration
280,000J for workdone and 56,000 watts for power
540p for the kwh question
Posted from TSR Mobile
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username1863871
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