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Physics P5 All Info You Need !!

J

Jinkglex

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dont we have to connect a current to the hall probe btw? and i believe the equation for that was something like Vh/vd = B.
 
1

1357913579

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SalmanslK said:
002.jpg


003.jpg


004.jpg


005.jpg



FEEL FREE TO ADD ANY INFO THAT I MIGHT BE MISSING IN YOUR COMMENTS !!
Click to expand...

thanks a lot bro
i didnt understand about the null method? wht is it used for the one u mentioned couldnt understand
 
Aries_95

Aries_95

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Alevel Romeo said:
and i am almost ready to blast the test tomorrow and i need help with aparatus!
please someone post the list of aparatus we are going to need like what should i use to measure the velocity of wind?
what should i use to measure magnetic flux density? and so on!
please please!
i need the list of apartus! and please reply fast! :) because test is really knocking at the door!
Click to expand...
Hope this helps :)
 

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SalmanslK

SalmanslK

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1357913579 said:
thanks a lot bro
i didnt understand about the null method? wht is it used for the one u mentioned couldnt understand
Click to expand...


null method is when the galvanometer is not calibrated(numbered) but is used to located slight electric current.it's a sensitive ammeter .
 
Fahim Abdullah

Fahim Abdullah

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Here are 3 graphs from 3 papers. They are VERY troublesome. The thing is that the uncertainties in the values (especially y-intercept) are HUGE. It's supposed to be since the lines deviate further from each other due to the different gradients. But see​
May/June 2010 Paper 51 where your m is 70000​
±10000 as your uncertainties have to be 1sf and therefore your main value have to be such that the 1 of 10000 is added to the last significant digit, right? But then the value of the time constant comes wrong later (0.5). 7​
±30 which is obviously weird. How can your uncertainty be >main value?! In 9702/51/O/N/11 your value of k will be like 2±1 with some exponential. Again too large. Or are the graphs wrong?​
​
​
 
SalmanslK

SalmanslK

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nishan2052 said:
for question 1
log 1.98 - log 1.96
it was the idea suggested by a brother.but i m also confused.
Click to expand...

i suggested this;

absolute uncertainty= fractional uncertainty multiplied by the answer of division or multiplication.

hence; absol uncer = (log 1.98 - log 1.96) * (log 1.96)

in log fractional uncertainty = log of largest possible value - log of mid value ---> (log 1.98 - log 1.96)

OR

(log of largest possible value - log of smallest possible value) /2 -------> (log 1.98 - log 1.94)/2
 
T

Trash Can

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magnesium said:
error bars in x axis are horizontal...worst acceptable line Should pass from left of top error bar to right
of bottom error bar or right of top error bar to
left of bottom error bar
Click to expand...
thanx but when the error bars are horizontal,doesnt it mean that the higher error is the right of bottom point since usually left side is the negative or decreasing side..also,the left side is the lower error of the top point??? so shouldn't it always be from right of bottom to left of top?????
 
Zari

Zari

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Can anyone help me in how to calculate the uncertainty for O/N 2008 Q2) for D^2
 
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