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Physics P5 questions

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Twinkle Charms:
one more question ,
How do we calculate absolute errors in the values of l^2??

the paper is attached, Q2 (b)

falafail:

--- Quote from: Zara on June 08, 2010, 06:33:05 pm ---one more question ,
How do we calculate absolute errors in the values of l^2??

the paper is attached, Q2 (b)

--- End quote ---

percentage error in l^2 = percentage error in l X 2
multiply that by whatever value you get for l^2

falafail:

--- Quote from: falafail on June 08, 2010, 05:31:02 pm ---in nov 09 the second variant, question 2 part d
to calculate the uncertainty i multiplied the percentage error in the gradient by the value i got for g, and i got 1.5
in the mark scheme it says to subtract the g you get from the gradient - g from worst acceptable line.. if i do that, i get 1.2
is my way also correct?

--- End quote ---

anyone? :(

iq101:

--- Quote from: falafail on June 08, 2010, 06:36:13 pm ---anyone? :(

--- End quote ---

Hmm. But personally i think the whole point of drawing a worst acceptable line is to calculate errors so yeah. Stick to the mark scheme method.

princesszahra:
this might help some one
http://www.mediafire.com/?sharekey=17ec329bec83263bdc09e7d393492eee47b0d1e1ae287e254ad239450a8c1cf1

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