Edexcel Unit 4: Physics on the Move 6PH04 (11th June 2015)

no it was; the energy of the photons produced when a proton and antiproton collide , or something like that

I thought kinetic energy isn't conserved because chemical energy is transferred to kinetic energy?

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kinetic energy in the system increases but total energy is conserved

I got 4.4s for RC (losing 67% of charge) and 1.1s for losing half the energy

Hence losing half the energy takes less time

Why would there be chemical energy- the tanks were empty?

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Why would there be chemical energy- the tanks were empty? I thought the explosion was just mechanical

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Why would there be chemical energy- the tanks were empty? I thought the explosion was just mechanical

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kg^-1 m^-3 s^4 A^2 i think

Let's make an unofficial mark scheme all together by editing this google document!!

+ Write down the question if you can remember it
+ If you see an answer you agree , add [+1] behind it
+ If you have a different answer, write it below the old one
+ If you can't remember the number of the question, put it in the "unclassified question"

I don't think that's right. Energy of a photon = hf, and E=mc^2 can't be applied as a photon has no mass

For the capacitor q, I said that since W=½QV , if the charge halves then the energy stored is divided by 4. So the energy must halve before the charge halves . is that correct?

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