Physics P2 Unofficial Markscheme Edexcel.

You could tell me the page number and which book you're referring to; I have the CGP guide and the official Edexcel textbook?

ur right the metal doesnt have a charge
but it has atomss which have electrons and the negative electrons from the door handle are attracted to the positive charge of the girl
so electrons flow from the metal handle to the girl causing a spark

im pretty sure u get a mark for saying the metal handle is a conducting meterial.

I swear it doesn't matter what the charge on the girl is - metal is a conductor so the charge always flows to the metal. This is static charge remember, so just adding electrons to the girl wouldnt do anything. Plus why would the metal just give electrons to the girl - where is the science there? That would make the atoms in the metal become ions

Ahh I see, thanks for sending. I was wondering why charge would flow from the door handle to the girl but no it flows up from the ground to the door handle and then to the girl, right??? Anyway sorry guys!

If the girl is positively charge and she loses electrons, she is more positively charged. Eg. 8 protons and 8 electrons. When she is positively charged, there are more protons than electrons. So now about 8 protons and 6 electrons. She needs to gain electrons now to become neutrally charged. Gains 2 neutrons from earth so she is discharged. Back to 8 protons and 8 electrons.

8 protons=8+charge. 8 electrons=8-
8+ + 8- = 0
8+ + 6- = 2+
gains 2 electrons so
8+ + 8- = 0
neutral again

She was originally positively charged from exchanging electrons from her to carpet. She is positively charged. When she touches the handle, the electrons from the earth/ground flows through the metal handle to the girl. She gains electrons to discharge her. The spark is not caused by electrons from the girl to handle but from the ground to handle to the girl.

Dw. Its only gonna cost one mark.

People are neutrally charged though. So she would have the right amount of electrons and protons. Then when walking on the nylon carpeting the electrons will transfer to the carpet. Leaving her positively charged.


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Ignore what I said there. I know she's neutrally charged at the beginning. Friction between her and the carpet made the electrons from the girl transfer to the carpet, making the girl positively charged. When she touches a material made out of metal, the electric shock is from the electrons moving from the earth to the metal to the girl. She is now discharged.

That's what I thought, but the other user is saying electrons travelled from the ground to her which isn't true.


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From ground, to metal then to her.
Ground is another way of saying earth if I'm not mistaken.

Yup hahaha thank you


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Lots of people have made that mistake
Good job on getting those marks

Also, for question 2d, I think this answer is missing out a couple of important things - but I can't remember how many marks it was worth so might not be important. Anyway I'll put my "improved" (IMO) answer below just in case anyone cares ahah

Fusion works best at high temperatures because this is needed to overcome the electrostatic repulsion of the (positive) nuclei. As the temperature increases, the nuclei move around faster because they have more energy. This increases the number of collisions of nuclei, therefore increasing the rate of the nuclear reaction. This means there are more fusion reactions per second.

Haha thank you I think I got 56/60? Wbu?


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In Question 1c, you said the charge flows from the metal to the girl. I'm 99% sure you are mistaken: as I said in a previous post, the charge flows from the girl to the metal - because metals conduct charge. Also the metal door handle (imagine your metal door handle in your house right now) does not have any charge. Where would it have got this random charge from? So the static charge that has built up on the girl then flows to the metal, discharging the girl.

I swear it doesn't matter what the charge on the girl is - metal is a conductor so the charge always flows to the metal. This is static charge remember, so just adding electrons to the girl wouldnt do anything. Plus why would the metal just give electrons to the girl - where is the science there? That would make the atoms in the metal become ions

I sed with the new clothes their is less drag so their can be more thrust and it takes long to acheive terminal velocity so u can accelarate more therefore your speed will increase so it will be quicker and new clothes decrease air resistance so u are not held back by air resistance so their are less force trying to push u back so it will speed u up


I sed it in more of a fancy way so how many marks


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