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Edexcel A2 Physics Unit 5 'Physics from Creation to Collapse' watch

1. (Original post by Uberuvy)
Got a question for you guys,

A mass of 0.08kg suspended from a vertical spring oscillates with a period of 1.5s.
Calculate the force constant of the spring (2)
T= 2pi * root of m/k where k is spring constant
2. (Original post by kosy91)
under boyle's law:

how do you plot the graph of pV against V???? and why??
No idea why, pV would be a constant though always under Boyle's law. So it's a horizontal straight line from the value of pV.
3. (Original post by Sasukekun)
No idea why, pV would be a constant though always under Boyle's law. So it's a horizontal straight line from the value of pV.
yeah i have many books with such a graph. but i wonder why.......?!
4. (Original post by Sasukekun)
No idea why, pV would be a constant though always under Boyle's law. So it's a horizontal straight line from the value of pV.
Or if you plot a graph of P against V it should look like the graph of y = 1/x, but if you plot P against 1/V you will get a straight line.
5. we dont need to know about pulsars do we?
6. Carbon-14 has a half-life of 5730 years. Living organisms contain approximately 100 atoms for every 1020 atoms of stable carbon-12, . Estimate the age of a fossil which is found to contain approximately 12 atoms of for every 1020 atoms of .

Guyz I need help in this
7. can i have help with Q3 from the spec paper about the child swinging
8. (Original post by ishta)
Carbon-14 has a half-life of 5730 years. Living organisms contain approximately 100 atoms for every 1020 atoms of stable carbon-12, . Estimate the age of a fossil which is found to contain approximately 12 atoms of for every 1020 atoms of .

Guyz I need help in this
lambda=ln2/5730yrs
N=12
Nnaught=100
9. (Original post by Kameo)
we dont need to know about pulsars do we?
no. other than the fact that it's a rotating neutron star that emits energy in the form of radiowaves. [at regular intervals - hence the 'puls' bit]
10. Does anybody have the data sheet for tomorrow? need to know the formulas we aren't going to be given.
Thanks
11. (Original post by hra_100)
Does anybody have the data sheet for tomorrow? need to know the formulas we aren't going to be given.
Thanks
its in the specification
12. (Original post by kosy91)
its in the specification
Thank You, was looking sample assessment material.
13. hey guys
lets go on qchat.rizon.net in 6PH05 and we can discuss every problem there online
14. http://qchat.rizon.net/ on 6PH05 people
15. (Original post by terminatorsb)
http://qchat.rizon.net/ on 6PH05 people
channel?
16. 6PH05 and the 0 as in the number

17. the axes are obviously wrong, right?
EDEXCEL -.-"
18. i dont get this either :/ someone help!!
19. not working cannot connect to remote server
20. (Original post by Bronze92)

the axes are obviously wrong, right?
EDEXCEL -.-"
yh doesnt make sense.

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