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PHYS1001 REG Throughout the semester you will work as part of 3 person team * Organize yourselves into teams of 3 * When you are happy with your team register your team on a computer and record your team number eg 7REG 14 * Complete questionnaire and place in the box at front of lab.
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PHYS1001 REG Throughout the semester you will work as part of 3 person team * Organize yourselves into teams of 3 * When you are happy with your team register your team on a computer and record your team number eg 7REG14 * Complete questionnaire and place in the box at front of lab
TIMETABLE – back page of lab manual Rotation system – Preparatory Work marked at the start of each session. Zero mark recorded if not completed before the lab class. Teams 1 to 8: 1st column Collisions 9 to 16: 2nd column Terminal Velocity 17 to 24: 3rd column Liquid Flow (1)
EXCEL – Data Analysis constant: “power” T = k an variable: length of semi-major axis variable: period of orbiting body constant: k = 2 / (G1/2MS1/2) How do we find the values of the constants? EXCEL: 5.791010 5.79e10
y = ??x?? R2 = ?? power fit using EXCEL trendline period T (s) semi-major axis a (m) (0,0) T = k an
lwf lbf log(T) EXCEL – linear fit y = ??x + ?? R2 = ?? LINEST command: slope & uncertainty intercept & uncertainty log(a) (0,0) slope = n n T = k an log(T) = n log(a) + log(k) intercept = log(k) log(k) k = 10intercept (kk+k-)
Identify / Setup hman hcyl
Execute straight line through origin y = m x (0, 0)
Execute 1 significant figure for uncertainty, hence, one decimal place best estimate also one deciaml place expressing your answer uncertainty: difference between slopes ‘lbf’ and ‘lwf’or linest command relative density slope of ‘lbf’ Evaluate You will have two results: your paper graph results and the result from the Excel analysis s.f. ok units ok value sensible man > cyl since hcyl > hman
Density of the liquid in the manometer Do not follow instruction in lab manual (pages 1.10 – 1.11) From your estimate of the relative density calculate the density of the liquid in the manometer knowing that the density in the cylinder is water. Compare your value of the density of liquid in the manometer with the value determined by the hydrometer How to express your results Graph Hydrometer Evaluate