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Unformatted text preview: Lab 1 Measurements and Uncertainty Lab Report 7 ts) . Station Check: Part 1: Comparing the Uncertainty of Instruments (48 pts)
I Using the meter stick, measure the length and the diameter of the copper cylinder and record. (4 pts)
(1 = ‘ cm L: Li cm I Using the equation V = M 72' h d2 , calculate the volume of the cylinder. Show work (4 pts) N r l ‘2 t _'J.»
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v: i! m3 El; 5:5”:37 Cm} I Calculate the uncertainty of the copper cylinder (14 pts) Accuracy of meter stick: ‘ cm a,
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\‘g \IU +VL. 5L5; “9" I Using the vemier calipers, measure the length and the diameter of the copper c linder and record. (4 pts)
d= 0x cm L= cm Lab 1 Measurements and Uncertainty I Using the equation V = )4 77 h d2 , calculate the volume of the cylinder. (4 pts) V: 3A7 cm3 V: V4. ‘1’? (449(09731
3 Cry;3 ' Calculate the uncertainty of the copper cylinder (14 pts) ’ z? Accuracy ofvernier calipers: Mom VI) ‘3: ‘(T ~ (' ‘29 ) ' _ I i .«r. «2
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%uncert= 0'5 % II I What does the percent uncertainty tell you about the choice of instruments? (4 pts) ‘ a t P g r: ,,
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k Cu Ii?“ a?” ti «.5; “NB?!” ﬂ if f m {j a Part 11: Percent Difference (29 pts) f. Using the vernier calipers, measure the diameter of the 2—meter length of copper wire.(3 pts) L=2000m
d= o g cm g. Using the equation for the volume of a cylinder, calculate the volume. (4 pts) V: é»: £2 ‘3' ms V W 20m {, All h. Using the digital scale, weigh the copper cylinder and the copper wire. (4 pts)
ii," i ‘3; mcylindcr = g 57. c g / Lab 1 Measurements and Uncertainty i. Using the equation p = Ir—Z, calculate the density of both objects. (8 pts) V
pcylinder': ._g_3 “:1
cm 13.5%? was
pwim= 9. l7 _5? 51553
6’” gas cm ence. Show your j. Compare the two values for the density of copper using a percent differ work (4 Pts) ‘ IL: ‘3‘ 3% av w 52/ ﬁg
%difference= 0/0 “ 55f“ M 5} J
7 I ,Mrw [nu ﬂ ‘9' W 9 Q?" t2 5 e expected errors in the dimension meaurements) that might k. List two reasons (other than th
between the two values for the density of copper. (6 pts) explain any percent difference 4’ a! (i, g: {2 Jew c? e" rte (Rust could caveat? OVER the. d3ﬂ$§%l€$.
«tsetse: wearer; “r Sade maid barwe, mis: {it dome. «2:3! .533...” a z ‘1. Part 111: Percent Error (23 pts)
6. Using the vernier calipers, measure the diameter of the steel sphere. (3 pts) amaze}... f. Using the equation V =% 7: d3 , calculate the volume of the sphere. (4 pts) V: 8% cm3 v=~ Vt. v {New}? phere and then calculate the density g. Using the digital scale, measure the mass of the s
of steel. (6pts) j
m = 42 i» 7 g i? m 7 9 g.
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cm Lab 1 Measurements and Uncertainty h. Most textbooks list the density of steel as 7.8 g/cm3. Calculate the percent error in
your experimental value for this quantity. Show your work. (4 pts) %e"°r=——L"L‘ % 7 ts ~—~ W7 2 :..= .0 W l I List two reasons (other than the expected errors in the dimension meaurements) why your
measured value for the density of steel may differ from the accepted value. (6 pts) ” Steel §g>ime~re comic! bar
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 Spring '08
 Nandi

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