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    (Original post by rm761)
    do you have the june 2015 paper? if so then can you please share
    Ask your teacher, they should be able to give to you.
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    (Original post by L'Evil Wolf)
    Ask your teacher, they should be able to give to you.
    I have the paper but not the mark scheme, can you send it to me please?
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    (Original post by Glavien)
    I have the paper but not the mark scheme, can you send it to me please?
    enjoy
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  1. File Type: pdf G484_MS_June15.pdf (588.5 KB, 198 views)
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    (Original post by L'Evil Wolf)
    enjoy

    Thank you so much!
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    (Original post by Glavien)
    Thank you so much!
    no problem, if you have any questions, please ask. Someone should get this thread going xD
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    For question 6(c)(iii) of the June 2015 paper, does the number of moles remain constant? I thought as the tank is being used by the diver the moles will decrease as he/she is using them up.

    Would I get the marks for saying P is proportional to n and T, so if temperature and number of moles decrease so does the pressure.
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    (Original post by L'Evil Wolf)
    Ask your teacher, they should be able to give to you.
    im an external candidate, don't have a teacher to ask
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    someone pls post paper, theres no way for me to get it
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    Pm me your email and I'll send the 2015 stuff if you want. Not sure how to send it another way
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    Hows everyones revision going? Find it quite hard how to revise for this tbh, papers seem easy but there's always that one wordy question that mind****s you haha
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    (Original post by MahuduElec)
    Pm me your email and I'll send the 2015 stuff if you want. Not sure how to send it another way
    Yes please! Do you have G484 and G485 June 2015?! That would be extremely helpful
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    (Original post by TheFarmerLad)
    Yes please! Do you have G484 and G485 June 2015?! That would be extremely helpful
    Google Drive Link: https://drive.google.com/open?id=0B9...W50NXdzTllLc1U
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    Hero, thank you!
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    (Original post by TheFarmerLad)
    Hows everyones revision going? Find it quite hard how to revise for this tbh, papers seem easy but there's always that one wordy question that mind****s you haha
    Feel exactly the same way. Most questions in the paper seem easy but when I do the actual paper they do not feel easy at al
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    Quick question about the c) part:

    (Earth: radius: 6400km, mass= 6x10^24kgMoon: radius: 1740km, mass 7.4x10^22, distance from Earth: 3.8x10^8m)

    Using the data provided at the start of the homework questions calculate:
    a) The Earth's gravitational field strength at the moon
    b) The gravitational force exerted by the Earth on the moon
    c) The magnitude of the Moons acceleration towards the Earth

    Is c) just same answer as a), or is it the answer of for a) and b) added together?
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    (Original post by motassks)
    Quick question about the c) part:

    (Earth: radius: 6400km, mass= 6x10^24kgMoon: radius: 1740km, mass 7.4x10^22, distance from Earth: 3.8x10^8m)

    Using the data provided at the start of the homework questions calculate:
    a) The Earth's gravitational field strength at the moon
    b) The gravitational force exerted by the Earth on the moon
    c) The magnitude of the Moons acceleration towards the Earth

    Is c) just same answer as a), or is it the answer of for a) and b) added together?
    I would use F=Ma on your answer for part b, dividing by the mass of the moon
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    Hi, can anyone please help with question 3c on Jan 2011 paper ? As usual the mark scheme doesnt help me in understanding what the graph should actually look like, and why. Thank you so much !! (Paper and mark scheme attached below) xx

    http://www.ocr.org.uk/Images/61757-q...nian-world.pdf
    http://www.ocr.org.uk/Images/63666-m...ld-january.pdf
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    Whats the rule on sig figs? Does your answer have to be the same number of sig figs as the values used in the question (almost always 2) or can we leave it as 3? Tend to find I'm losing marks because I'm carrying my exact answer forward in the following questions that involves the value I previously calculated...
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    (Original post by alevelup)
    Hi, can anyone please help with question 3c on Jan 2011 paper ? As usual the mark scheme doesnt help me in understanding what the graph should actually look like, and why. Thank you so much !! (Paper and mark scheme attached below) xx

    http://www.ocr.org.uk/Images/61757-q...nian-world.pdf
    http://www.ocr.org.uk/Images/63666-m...ld-january.pdf
    Bear in mind that the gradient of the graph is equal to the rate of loss of temperature and remember thermal energy is directly proportional to temperature. C (SHC) of milk below 0 degrees is significantly less than it is above 0 degrees therefore, less thermal energy required (to be lost) in order to cool it down below 0 degrees than above 0 degrees. In other words the gradient of the graph below 0 will be greater than that above 0. If less energy is required to cool a substance, the rate of temperature decrease (gradient) will be greater. And for the final mark, temperature will remain constant at 0 for a short while as this is the point of the substance changing state (we're told the freezing point) - remember internal energy? So to sum up, gradient of graph will be negative always (apart from when the temp remains at 0, there it will be a straight line) however gradient below 0 will be steeper than above 0. Hopefully all that helped!
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    (Original post by TheFarmerLad)
    Whats the rule on sig figs? Does your answer have to be the same number of sig figs as the values used in the question (almost always 2) or can we leave it as 3? Tend to find I'm losing marks because I'm carrying my exact answer forward in the following questions that involves the value I previously calculated...
    Well I just did the Jan 12 paper, and pretty much, nearly every answer in the ms was 3sf. So I'm probably going to do 3sf unless it's clear the Q has 2sf throughout all parts.
 
 
 
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