Edexcel PHYSICS Doubts

[The Golden Girl =D]

Let's discuss it here ;

https://studentforums.biz/gce-as-a2-level-(cie-edexcel)/edexcel-2011-mayjune-examination-discussion-!/

GG

[studz]

anyone doing unit 6b for physics?
i have no idea what that paper's like   
and i want to know the important things to remember for that paper

[The Golden Girl =D]

anyone doing unit 6b for physics?
i have no idea what that paper's like   
and i want to know the important things to remember for that paper

check this :

https://studentforums.biz/pastpapers/edexcel-unit-6b-(6ph08)-practicals/

[MasterMath]

Anyone June 2010 6PH01 Question 17 a) .. I think i know how to do it, just want to make sure cause I really didnt get the MS, a picture would be awesome <3

[astarmathsandphysics]

Anyone June 2010 6PH01 Question 17 a) .. I think i know how to do it, just want to make sure cause I really didnt get the MS, a picture would be awesome <3

Can you post the paper

[Malak]

Can anyone clarify, waves travel slower is shallow water and faster in deep right?
But does that alter the wavelength?

Thanks

[Vampire-Love4ever]

anyone doing unit 6b for physics?
i have no idea what that paper's like   
and i want to know the important things to remember for that paper

Check this out: https://studentforums.biz/reference-material-83/edexcel-chemistry-and-physics-unit-6b/

[The Golden Girl =D]

Can anyone clarify, waves travel slower is shallow water and faster in deep right?
But does that alter the wavelength?

Thanks

going from deep to shallow the wavelength decreases and the speed also decreases.

I hope I cleared your doubt

[Malak]

Oh thx GG

And also sometimes in paper in the diagram they show small gaps between wave lines, does that mean that the wavelength is smaller? 
What i mean is this (attachment the 2nd lines)

[The Golden Girl =D]

yup it does means it's smaller.

[NidZ- Hero]

Uncertainty estimates are crucial for comparing experimental numbers. Are the measurements 0.86 s and 0.98 s the same or different? The answer depends on how exact these two numbers are. If the uncertainty too large, it is impossible to say whether the difference between the two numbers is real or just due to sloppy measurements. That's why estimating uncertainty is so important!

Measurements don't agree   0.86 s ± 0.02 s and 0.98 s ± 0.02 s
Measurements agree   0.86 s ± 0.08 s and 0.98 s ± 0.08 s
If the ranges of two measured values don't overlap, the measurements are discrepant (the two numbers don't agree). If the rangesoverlap, the measurements are said to be consistent.

CAn someone explain this part :S

[Malak]

^ Is this a past paper or what?  can you tell which year then? *confused*

[Malak]

Explain how line spectra provide evidence for the existence of energy levels in the atoms?

thx

[NidZ- Hero]

^ Is this a past paper or what?  can you tell which year then? *confused*

Dude ppl in cie physcis wont reaply MAybe cuz they r  busy So.. i posted in here
 Well its in practical Nvermind 

[wakemeup]

Uncertainty estimates are crucial for comparing experimental numbers. Are the measurements 0.86 s and 0.98 s the same or different? The answer depends on how exact these two numbers are. If the uncertainty too large, it is impossible to say whether the difference between the two numbers is real or just due to sloppy measurements. That's why estimating uncertainty is so important!

Measurements don't agree   0.86 s ± 0.02 s and 0.98 s ± 0.02 s
Measurements agree   0.86 s ± 0.08 s and 0.98 s ± 0.08 s
If the ranges of two measured values don't overlap, the measurements are discrepant (the two numbers don't agree). If the rangesoverlap, the measurements are said to be consistent.

CAn someone explain this part :S

We actually kind of have this in Edexcel practical as well (mainly for A2). It's pretty simple. In the first case, think about the max value the 0.86 measurement could have. 0.86 + 0.02 = 0.88. Now, think about the minimum value the 0.98 value could have. 0.98 - 0.02 = 0.96. So the 2 values don't overlap. In the second case repeat the same process. 0.86 + 0.08 = 0.94. And 0.96 - 0.08 = 0.88. The values of the range do overlap each other so the measurements are consistent. Basically, if the ranges intersect, the values are consistent. If not, then they aren't.