Physics exam 2016 january ( 19/01/2016)

WhiteX

so guys if your doing this exam share thing and lets discuss the exam >>>

good luck for u all

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reserved

reserved once more

@danr2

From jan 2013:

Nuclear fission can lead to a chain reaction by:

-Nucleus splits.
-Releases nuclei.
-Which are absorbed by different nuclei.

This process releases energy in the form of kinetic energy of the products.

Pressurised water acts a coolant.

Moderator slows down the neutrons.

Energy transfers in a power station:

Heat energy is released by a moderator >>> Thermal energy in water/steam >>> Kinetic energy in generator >>> Electrical energy in wires.

Reply 4

danr2

Original post by Mihael_Keehl

reserved once more

what is reversed?

Reply 5

danr2

Original post by Mihael_Keehl

thanks!!! do you knoww of any picture of the moderator being labeled?

Reply 6

Mihael_Keehl

Original post by danr2

what is reversed?

Lol I meant I was reserving those posts for myself :biggrin:

Nothing physics related :wink:

Reply 7

Mihael_Keehl

Original post by danr2

thanks!!! do you knoww of any picture of the moderator being labeled?

nope will let you know tho.

Reply 8

danr2

Original post by Mihael_Keehl

Lol I meant I was reserving those posts for myself :biggrin:

Nothing physics related :wink:

oh ok haha.. first time i have come across this on tsr :biggrin:

Reply 9

Mihael_Keehl

Original post by danr2

what is reversed?

for a graph of current against voltage what goes on the x and y axes?

Was sweet

Original post by Mihael_Keehl

Was sweet

good

there were 2 q about efficncy right ?

i got for first one 899 you ?

and the second 899 divided by 72 then x 100 i got 1280 something like that and you ?

Reply 12

Mihael_Keehl

Original post by WhiteX

good

there were 2 q about efficncy right ?

i got for first one 899 you ?

and the second 899 divided by 72 then x 100 i got 1280 something like that and you ?

I got 899 too.

The second was to divide by 0.72 but I did get a value like that.

Reply 13

Heidiludwigg

Original post by WhiteX

so guys if your doing this exam share thing and lets discuss the exam >>>

good luck for u all

How did you find it?!

Reply 14

WhiteX

Original post by Mihael_Keehl

I got 899 too.

The second was to divide by 0.72 but I did get a value like that.

so you got something that less than 6000 ?

and what about the hooks law i saied no because its reached a elastic lemits and it will not return to it original shape is it right ?

Reply 15

WhiteX

Original post by Heidiludwigg

How did you find it?!

it was a good paper u ?

Reply 16

Mihael_Keehl

Original post by WhiteX

so you got something that less than 6000 ?

and what about the hooks law i saied no because its reached a elastic lemits and it will not return to it original shape is it right ?

didnt obey.

But you could have said it did.

I said gradient not constant, gradient not a straight line, tested 2 points out from load and unload to show that k was not constant/equal.

Idk because it never went past its breaking limit.

Reply 17

Heidiludwigg

I thought it was a bit ****!! It was alright but some of the questions were conditional, like when it said about how far the planets could be away fro each other, but didn't tell you the diameter of the star so yeah it was alright but little things like that thre me off I found chemistry a lot better

Reply 18

Mihael_Keehl

Original post by Heidiludwigg

The greatest distance was the sum.

The smallest distance was the difference.

I found chem a lot harder personally.

Nice comet question, which I had done the night before :wink:

Reply 19

WhiteX