OCR Twenty First Century Science Physics P1-7 *Official Thread 2016*

MY PREDICTIONS FOR 6 MARKERS (After looking at the last 4 years of papers)
P4: How forces impact motion, accelleration/ kinetic energy and GPE
P5: Transformers, Electromagnetic induction, Motor effect
P6: Types of radiation/ effects, Rutherford, nuclear power and waste

Do any of you want the subjects from the last 4 years of papers? I've made note of them and am happy to share

Do any of you want the subjects from the last 4 years of papers? I've made note of them and am happy to share

And is Rutherford the Gold Scattering Experiment, could you expand on this?

June 2015 mark scheme everyone

June 2015 mark scheme everyone

Anyone know how to this?

Before the experiment people thought that an atom was like a 'plum pudding' - positive charges floating in a sea of negative. The experiment fired alpha particles at gold foil, and they found that the vast majority of alpha particles passed straight through the atoms, and a few were deflected or bounced back.

This proved that the positive charges in an atom were in the middle, and we're contained in a very small nucleus, as alpha particles are positively charged, so due to electrostatic repulsion, some particles bounced back or were deflected. But the fact that most passed straight through also proved that most of the atom was empty space.

Because of this experiment, the ' plum pudding atom' idea was ditched, and now the idea is of the 'nuclear atom'

Hope that helps

Omd you literally missed the only question i really needed. The 6 mark on page 5. Do you have it at all? please please please

Thanks it did!
Hahaha, I remember the plum pudding and that's all

My answers for the P456 (the ones I can remember for the short answers anyway):
• 22N
• 11J
• 5m/s (pretty sure is wrong)
• Iron core
• Eve
• Ben
• 5 Ohms
• 1.5V
• 3V
• 0.2A
• 45,000,000,000 J
• Magnetic induction
• The Wavey looking voltage thing
• C, for the half-life, as gamma less ionising in the body
• Something about perceived risk is over exaggerated by the calculated risk
• Alpha is not strong enough to go through
• Beta- second last box
• Gamma- last box
That’s all I remember, but itd be nice to compare what you guys got, to see how badly I actually did lol

How many marks was the lines for beta and gamma?

I'm so annoyed I read it as blocked instead of passed through..

That was such an easy question and I messed up on it ughhhh

I got mostly the same apart from the current 0.2A current as i thought current wad the same everywhere in series so i put 0.4A? I didnt have a CLUE for the beta gamma boxes.
For the speed one I used ke=gpe, worked out gpe with the given height and weight, rearranged ke formula to get ke is root 2 x ke divided by mass which is root 30 and 5.4777 i think.
Can you remember the P5 6 marker? I talked about current being shared across the branches etc. Then repeating the test using more values, best estimate etc.