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Introductory Physics Homework Help
A question on percentage uncertainty
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[QUOTE="Mr Bob555, post: 5482019, member: 595059"] [h2]Homework Statement [/h2] Say we have the equation D[SUP]2[/SUP] = C x N where C = A[SUP]2[/SUP]. Using a graphical method to find the % uncertainty of C (from graph of D[SUP]2[/SUP] against N) which involves working out the gradient which equals C and so forth. This value is 25%. The question is "what is the percentage uncertainty of A?" This is actually a question that appeared in an A-level paper i did today and it was the only one that really bamboozled me :confused:. [h2]Homework Equations[/h2][h2]The Attempt at a Solution[/h2] I realize you don't divide by two;my reasoning being that when asked to calculate the % uncertainty of r in say the equation V = 4/3 x π x r[SUP]3[/SUP] the question doesn't explicitly state r[SUP]3[/SUP]. So i think that it is between doubling 25% or just leaving it. Now i think it was the latter but in the exam I did indeed double it to 50%. [/QUOTE]
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Introductory Physics Homework Help
A question on percentage uncertainty
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