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    (Original post by hafsa23)
    I thought it was 400000V
    hi my fellow hafsa!!!
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    (Original post by hafsa473)
    hi my fellow hafsa!!!
    hello again !! How did you find the chem and biology exams??
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    (Original post by usernametobe)
    Why does a fridge form a convection current when the fridge door is closed?
    Because, when the fridge door is closed, the warm air from outside the fridge meets the cooler air inside the fridge so the warm air, being less dense, rises up and the cooler air being more dense falls down. This creates a convection current.
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    (Original post by hafsa23)
    hello again !! How did you find the chem and biology exams??
    I don't really know what happened in Biology but then again neither does anyone - I hated it
    Chemistry was way more easier I did enjoy that ngl

    How did you find those exams?
    And good luck for the physics exam tomorrow!
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    (Original post by usernametobe)
    Why does a fridge form a convection current when the fridge door is closed?
    the air is cool near the compartment
    this is more dense
    so it falls
    and displaced less cooler air


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    (Original post by hafsa473)
    Isnt it a network on cables and transformers...? I just did the june 13 past paper and that was the answer to that question
    I don't understand how but it just is
    Oh yes you are right, thank you
    even though in the revision guide it says otherwise
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    (Original post by georgiaesmehare)
    Help!!
    How do you remember the different methods of generating energy??!!
    Totally screwed for tomorrows exam
    You don't need to be able to list them all apart from the non renewable ones, i assume, (oil, coal, natural gas, nuclear). I think you just need to understand how they work and the pros and cons
    And you're not "totally screwed" georgia! It's not like you're going to fail tbh
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    (Original post by t10r)
    Can you tell me what each letter stands for in the energy names?
    Kinetic, Heat, Light, Gravitational potential, Chemical potential, Sound, Electric, Elastic potential, Nuclear
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    (Original post by hafsa23)
    I thought it was 400000V
    It varies - sometimes it's 400,000 V, sometimes it's 132,000 V, and sometimes it's 275,000 V
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    How do solar cells produce electricity, and what does that amount of electricity produced by a solar cell depend upon?
 
 
 
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