2016 Official AQA New Spec AS Level Physics Paper 1 - 24th of May 2016

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Reply 1121

daveblack

Original post by T.S.10

Hey have u got access to AQA ALEVEL physics set 2 papers, not the AS ones (Alevel ones), if so could you send it to me or post the links in the srudent room.I did the paper and it was sooo diffcult, so I would like to redo some questions again.
Thanks.

Yea has any one got this^^^^^^^^^^^^^^^^^^^^^^^^^^^^^please :smile:

Reply 1122

username2250433

13

What is the uncertainty of a top pan balance? Would it be +-0.005 since we got measurements to 2dp e.g 2.66g ?

Reply 1123

bubblegum219

5

Original post by wannabe_lawyer

chrome-extension://ecnphlgnajanjnkcmbpancdjoidceilk/content/web/viewer.html?file=https%3A%2F%2Flearnzone.loucoll.ac.uk%2Fpluginfile.php%2F194272%2Fmod_resource%2Fcontent%2F1%2F7407-1%2520Paper%25201%2520QP%2520v1.1%2520Scanned%2520handwritten%2520answers.pdf

Hi, don't know if u still need the answer since u posted a long tiome ago but.. basically, the used the conservation of energy.
total energy before = KE of positron + rest energy of Positron = rest energy of electron = 2000 + 2(511). Convert this into jouls and you'll get 16.4x10^-14
total energy after has to equal total energy before, so 16.4x10^-14 is the energy of 2 photons. divide this by two to get the energy of 1 photon = 8.2x10^-14

hope that helps :smile:

Reply 1124

bubblegum219

5

Do we need to know any practicals for paper 1???

Reply 1125

username2583225

5

Original post by bubblegum219

Do we need to know any practicals for paper 1???

yes they may ask to describe a method for finding a value experimentally e.g young modulus of a wire or wavelength of light.

Reply 1126

bubblegum219

5

Original post by dan1yar18

yes they may ask to describe a method for finding a value experimentally e.g young modulus of a wire or wavelength of light.

Oh ok. thank you

Reply 1127

RoyDylan

3

Hi,
Does anybody know how to answer Q1 in the AS level paper 2 specimen paper. I've read the mark scheme for the question but have no idea how some of the answers have been arrived at.
This is the link to the paper: http://filestore.aqa.org.uk/resources/physics/AQA-74072-SQP.PDF
Thanks
Roy

Reply 1128

crashMATHS

16

Original post by RoyDylan

Hi,
Does anybody know how to answer Q1 in the AS level paper 2 specimen paper. I've read the mark scheme for the question but have no idea how some of the answers have been arrived at.
This is the link to the paper: http://filestore.aqa.org.uk/resources/physics/AQA-74072-SQP.PDF
Thanks
Roy

Which specific part of Q1?

Reply 1129

RoyDylan

3

Original post by crashMATHS

Which specific part of Q1?

all parts apart from part 2

Reply 1130

EpicMan

12

Original post by not_lucas1

What is the uncertainty of a top pan balance? Would it be +-0.005 since we got measurements to 2dp e.g 2.66g ?

Yes it would be.

Original post by RoyDylan

Hi,
Does anybody know how to answer Q1 in the AS level paper 2 specimen paper. I've read the mark scheme for the question but have no idea how some of the answers have been arrived at.
This is the link to the paper: http://filestore.aqa.org.uk/resources/physics/AQA-74072-SQP.PDF
Thanks
Roy

The uncertainty of something (in this context) is +- 1/2 a degree of accuracy || resolution of the instrument being used.

Reply 1131

EpicMan

12

Original post by HARRYCROOKS

Please help. it is believed the chocolate bar question is on my mock in 10 mins. HELP NOW

Probably too late but I'll put it here for anyone who's curious.

Microwave ovens

Microwave ovens have microwave transmitters on the side of them facing towards the opposite side of the microwave. There's a metal cover inside microwave ovens, microwaves reflect off of the cover (fixed end points), this forms a stationary wave.

Now imagine that your plate (inside the oven) wasn't rotating and you placed a chocolate bar inside the microwave oven, it would result in only certain points of the chocolate bar melting; these positions are the points of near maximum amplitude of the stationary waves formed, otherwise known as the antinodes. You can measure the distance between two of these points (in metres) to work out the wavelength; 2*Distance between 2 adjacent antinodes = wavelength.

This is why microwave ovens have a rotating disc, to make sure that more is warmed up. It's usually easier for water molecules inside foods to heat up, this causes the surrounding food to warm up. That's why tomatoes (if you've ever tried it) warm up quite a bit once you place them in a microwave oven and other foods don't.

Reply 1132

Lizzy72

Hi, I know this may sound stupid, but i'm getting confused because i don't know what are the exact topics for paper 1 As physics can someone help me please ?

Reply 1133

bhavik_007

5

Original post by Lizzy72

Hi, I know this may sound stupid, but i'm getting confused because i don't know what are the exact topics for paper 1 As physics can someone help me please ?