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AQA GCSE Physics Unit 2 and 3 (20th May)

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Avatar for camz01
camz01
P3 was the answer motor effect or induction? Because the wire was cutting through the magnets but it said 'effect' ?
Original post by Desouza123
Did you lot get 12 for half life?


I got 12 :smile:
Original post by camz01
P3 was the answer motor effect or induction? Because the wire was cutting through the magnets but it said 'effect' ?


Motor effect
Original post by kwstudent
PPLS; P2 .... The second last ques - Wot graph did u choose? ABC or D?


B...I think! Or C...I can't remember
Original post by cogito.
Just want to make it clear that half-life question is 12

It require A-level maths knowledge to solve it which is logarithm rather than just divide, of course you can trial/test to get the answer.


correct, 3 half life therefore 36/3. coreect
What direction was the arrow supposed to be on the motor effect question? The current was going from right to left and the magnetic field was north closest to us and south further away. This divided my friendship group :s-smilie: but I put down...
What were the six markers?
For the six marker i put
Most of the mass of the atoms is concentrated in the centre
The protons which have positive charge and the neutrons which are neutral are in the nucleus
The protons and neutrons are both heavy and have a mass of one
The electrons have a negative charge and they move around the nucleus
The radius of the nucleus is much smaller than the the radius of the atom
The electrons have no mass
The sum of protons and neutron make the relative mass


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Reply 208
Avatar for camz01
camz01
What's the explanation for the 3 mark about the coil moving in p3
Original post by tombirchy
Neutrons and protons have equal mass.


He is correct for gcse neutrons mass = proton mass. As we talk about relative mass
Original post by Desouza123
Yeah haha thats what I got too. What did you lot put about the scientists and why they developed a new atom or something


Because the evidence didn't match up, therefore they prediction was required, also the atom didn't have electrons inside as it went throught the gold foil. i think its wrong lol
Original post by Lucofthewoods
What were the six markers?


To describe the nuclear model of an atom

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was repulsion force for fusion needed to overcome?

electrostatic forces?
The Question asking you 'the wavelength of an X-ray is the same as the diameter of what' ?

I didn't have a clue, think I put a human cell, hahaha :s-smilie:
Original post by emmaalouisee
B I think? What did you put for the change in focal length for the 60 year old? P3


Was that the graph one on p3? Thought it was for a 90 year old? What length did you use for the focal length for working out the power? Did you convert the units?
Original post by Asad_2015
was repulsion force for fusion needed to overcome?

electrostatic forces?


I dont even know what repulsion means :frown:

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Original post by RadonGhost
The Question asking you 'the wavelength of an X-ray is the same as the diameter of what' ?

I didn't have a clue, think I put a human cell, hahaha :s-smilie:


I think it's an atom, sure that's what the mygcsescience videos said... Could be wrong though
Original post by Hollie1903
I think it's an atom, sure that's what the mygcsescience videos said... Could be wrong though


You're probably right, but it was only 1 mark so doesn't matter too much
Reply 218
Avatar for a.zed
a.zed
2
Original post by Hollie1903
I think it's an atom, sure that's what the mygcsescience videos said... Could be wrong though


Yeah. I'm pretty sure it was
Reply 219
Avatar for camz01
camz01
The eye question was it suspensory ligaments and retina?

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