I have a few questions regarding paper 5 Physics:
1. Are the error bars in the graph all of the same length?
2. Can Error bars be really large or are they meant to be really small?
3. When calculating the gradient ,do we draw the triangle on the graph between the two points that LIE on the line of best fit?
4. Should the reading and absolute uncertainty have the same no of significant figures
Also can someone tell me how to calculate the uncertainity in l^2 question 2 in
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s07_qp_5.pdf
1. Are the error bars in the graph all of the same length?
2. Can Error bars be really large or are they meant to be really small?
3. When calculating the gradient ,do we draw the triangle on the graph between the two points that LIE on the line of best fit?
4. Should the reading and absolute uncertainty have the same no of significant figures
Also can someone tell me how to calculate the uncertainity in l^2 question 2 in
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s07_qp_5.pdf