bugsuper
Badges: 0
Rep:
?
#1541
Report 6 years ago
#1541
(Original post by Kenna)
What did people get for the energy release on the 1st question? I think mine was around 230 Mev.... can't remember exactly.
I got around 7.3Mev --- wasn't it a fusion reaction? That seems an awful lot for a fusion reaction when there's only like four nucleons involved
0
reply
Jam Jam24
Badges: 2
Rep:
?
#1542
Report 6 years ago
#1542
(Original post by Lay-Z)
Same, I just said its quantsised so it has to be a multiple of 1.6x10^-19 and its the closest multiple

Posted from TSR Mobile
Yeah same i got 2.5x10-19, but i didnt write that done cos i thought it was wrong i still wrote the method out, will i get a few marks?
0
reply
Pinkhead
Badges: 14
Rep:
?
#1543
Report 6 years ago
#1543
(Original post by Katherineelb)
I think it's because Ek is conserved and the moderator atoms are stationary so the Ek is shared between the two , therefore slowing neutrons down as they're Ek is lower than before
Contradictory?
0
reply
iLayton
Badges: 0
Rep:
?
#1544
Report 6 years ago
#1544
(Original post by TerminatorFive)
I got like 27 or something, so youre probably fight :P
Think I got 24.7 MEV, so did most of my friends... Might have been 27.4 , can't remember!


Posted from TSR Mobile
0
reply
Little Wing
Badges: 1
Rep:
?
#1545
Report 6 years ago
#1545
13.6 billion years anyone?
0
reply
Katherineelb
Badges: 0
Rep:
?
#1546
Report 6 years ago
#1546
(Original post by Pinkhead)
Contradictory?
No because the total kinetic energy is still the same in the system
0
reply
Pinkhead
Badges: 14
Rep:
?
#1547
Report 6 years ago
#1547
(Original post by bugsuper)
I got around 7.3Mev --- wasn't it a fusion reaction? That seems an awful lot for a fusion reaction when there's only like four nucleons involved
I got 18 but most people seem to have got 24. I think we're wrong
Man my marks are going down 1 at a time.
0
reply
Pinkhead
Badges: 14
Rep:
?
#1548
Report 6 years ago
#1548
(Original post by Katherineelb)
No because the total kinetic energy is still the same in the system
Oh right, I see what you mean.
0
reply
Namige
Badges: 16
Rep:
?
#1549
Report 6 years ago
#1549
Ideal gas aqa textbook definition: a gas under conditions that obeys boyle's law.
0
reply
Jam Jam24
Badges: 2
Rep:
?
#1550
Report 6 years ago
#1550
(Original post by cooldudeman)
Yeah 0.87c. That means we got the part before right too.

Posted from TSR Mobile
Did you have to write out 0.87C? I just labelled the axis :/
0
reply
AndyMacCormick
Badges: 0
Rep:
?
#1551
Report 6 years ago
#1551
For the mass of ice question, I stupidly used a value of 5 for the delta T instead of 8!!!! So got 0.028kg or something! Reckon i would get 1 mark?
0
reply
cooldudeman
Badges: 17
Rep:
?
#1552
Report 6 years ago
#1552
(Original post by SpiggyTopes)
The mass of a positron is the same as the mass of an electron I think, which is given in the table.
Yeah I used the electron mass for the positron. There was no other way.

Posted from TSR Mobile
0
reply
Pinkhead
Badges: 14
Rep:
?
#1553
Report 6 years ago
#1553
Turning points 6 mark one was surprisingly easy so I'm hoping I would have made up for the other marks I've lost.
0
reply
Pinkhead
Badges: 14
Rep:
?
#1554
Report 6 years ago
#1554
(Original post by AndyMacCormick)
For the mass of ice question, I stupidly used a value of 5 for the delta T instead of 8!!!! So got 0.028kg or something! Reckon i would get 1 mark?
Yes you should get 1 for the equation you used.
0
reply
SpiggyTopes
Badges: 14
Rep:
?
#1555
Report 6 years ago
#1555
(Original post by bugsuper)
I got around 7.3Mev --- wasn't it a fusion reaction? That seems an awful lot for a fusion reaction when there's only like four nucleons involved
Fusion reactions give off loads of energy, look how steep the binding energy per nucleon graph is between hydrogen and helium.
0
reply
cooldudeman
Badges: 17
Rep:
?
#1556
Report 6 years ago
#1556
Man proving that thermal q was tough. Simultaneous equations. Wtff for only 2marks

Posted from TSR Mobile
2
reply
Kenna
Badges: 0
Rep:
?
#1557
Report 6 years ago
#1557
For the Nuclear 6 marker I wrote about the safety etc... then said use a Gamma ray detector to measure the gamma ray count rate at certain distances, then see if the value of k is consistent.. then use a cloud chamber and look for "straight lines" to confirm the is alpha radiation present.. Could not think of anything else.
0
reply
jamzzster
Badges: 0
Rep:
?
#1558
Report 6 years ago
#1558
(Original post by bugsuper)
An atomic mass unit is 1/12th the mass of a nucleus of carbon-12 - pretty sure that's the official definition
Dammit!
I put exactly the same but I said it was 1/12 of a carbon atom
0
reply
Beth_L_G
Badges: 10
Rep:
?
#1559
Report 6 years ago
#1559
(Original post by jamzzster)
Dammit!
I put exactly the same but I said it was 1/12 of a carbon atom
Same, that's what it says in my book
0
reply
jamzzster
Badges: 0
Rep:
?
#1560
Report 6 years ago
#1560
(Original post by HypErTwisT)
what was the most dangerous waste from a nuclear reactor? Or whatever that question was, I said fission products/used fuel rods...
Yeah I put Depleted fuel rods
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • University of Bradford
    Undergraduate and Postgraduate Open day Postgraduate
    Thu, 24 Oct '19
  • Cardiff University
    Undergraduate Open Day Undergraduate
    Sat, 26 Oct '19
  • Brunel University London
    Undergraduate Open Day Undergraduate
    Sat, 26 Oct '19

Would you turn to a teacher if you were being bullied?

Yes (66)
23.4%
No (216)
76.6%

Watched Threads

View All