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  1. R

    Physics: Post your doubts here!

    hey what is meant by the hall probe is in same orientation?
  2. R

    Physics P5 All Info You Need !!

    do u have the markscheme for this paper?
  3. R

    Physics P5 All Info You Need !!

    do u have the markscheme for this paper?
  4. R

    Physics P5 qs and Diagrams

    can somebody post diagram for n10 51 and n08. plzz help
  5. R

    Solved physics Paper 5??

    and and can u upload other diagrams as well so that i can tally my diagrams :)
  6. R

    Solved physics Paper 5??

    abt the amplitude part when u do that question please reply. and i wanted to ask in measuring pressure should we always use pressure gauge or at some instances barometer should be used.
  7. R

    Solved physics Paper 5??

    hey in n07 to measure pressure we are using pressure gauge. it's saying not allow pressure meter or barometer. so in calculating pressure do we always use pressure gauge or sometimes pressure meter or barometer can be used. and in mark scheme there is a pt written difficulty in measuring...
  8. R

    Physics: Post your doubts here!

    hey in n07 to measure pressure we are using pressure gauge. it's saying not allow pressure meter or barometer. so in calculating pressure do we always use pressure gauge or sometimes pressure meter or barometer can be used. and in mark scheme there is a pt written difficulty in measuring...
  9. R

    Solved physics Paper 5??

    hey guys in n07 to measure pressure we are using pressure gauge. it's saying not allow pressure meter or barometer. so in calculating pressure do we always use pressure gauge or sometimes pressure meter or barometer can be used. help plzz :)
  10. R

    A level Biology: Post your doubts here!

    hey in n09.52 i dont understand the pts 2,3 and 4. can u plzz explain those pts to me so that i know what is their purpose and when to use them in my asnwers. By the way these pts should mostly be used in microscope right? i dont understand why the no. of grains are related with the area. what...
  11. R

    Solved physics Paper 5??

    guys in nov11/51 this reason is given: reasoned method to keep Hall probe in constant orientation (e.g. use of set square, fix to rule, optical bench or equivalent). i want to know that whenever we want something to be in orientation we use the set square or are there any uses of set square. And...
  12. R

    Solved physics Paper 5??

    hmm this error may be wrong of mine. u can ask other people on the thread they may explain it to u better to confirm your answer.
  13. R

    Solved physics Paper 5??

    hey guys in n09/51 what is your gradient and error in 2c. mine is coming -3.78+-0.24. Not too confident abt the error too. And in drawing graphs do all points have to be equally on both sides of lines cuz there are some graphs in which i cant do that. Is that wrong?
  14. R

    Solved physics Paper 5??

    use y=mx+c and then its saying v on the y axis and 1/lambda on x axis so rearrange the equation according to y=mx+c. like: hc/lambda/e- B/e=V. now for gradient mx is hc/lambda/e so 1/lamda is x so the rest of it in mx must be m(gradient)
  15. R

    Solved physics Paper 5??

    and one another question i always calculate my absolute uncertainty from the percentage uncertainty in questions such as qs 2b of n12/53. so how do we calculate the absolute uncertainty directly when values both having absolute uncertainties are being divided, multiplied or added. Like values of...
  16. R

    Solved physics Paper 5??

    i mean that i calculated percentage uncertainty like this: [error/value of g + 2*0.01(error of t)/value of t]* 100 my answer came : [24.1/987 + 0.01*2/1] * 100 =2%+2.44%=4.44% is this method correct? and i also want to know if a value is like 3 sig figures should the error be 3 sign figures as...
  17. R

    Solved physics Paper 5??

    in j10/52 the answer to 2d is coming 987+- 24.1 This absolute uncertainty is very strange to me. Can anybody check their answers to this part and confirm that the uncertainty i have calculated is correct or not . to calculate uncertainty i used formula= g from best fit line grad- g from worst...
  18. R

    Solved physics Paper 5??

    hey is this thread for practical ppr 5 tips or ppr 3 tips?
  19. R

    *Biology Paper 5 tips*

    what are these links for? do they help in ppr 5
  20. R

    Solved physics Paper 5??

    hey guys in qs 2 ofn09/51 in calculating gradient im calculating gradient by using these values= 2.795-2.988/2.519-2.47. So should i round these values to 3 sig figures or should i round the answer of gradient that comes to 3 s.f. If i round these values before calculating the gradient the value...
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