PHY 101L Module One Lab Report Measurements and Uncertainty
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PHY 101L Module One Lab Report Measurements and Uncertainty
Name: Sierra Rivers
Date: 10/29/2023
Complete this lab report
by replacing the bracketed text with the relevant information.
Data
Data Table 1: Determination of Uncertainty in Lab Balance
Trial
Washer #1
Mass (g)
Washer #1
Deviation from
Average (g)
Washer #2
Mass (g)
Washer #2
Deviation from
Average (g)
1
23.9
0
26.6
-0.04
2
23.9
0
26.5
0.06
3
23.9
0
26.5
0.06
4
23.9
0
26.6
-0.04
5
23.9
0
26.6
-0.04
Average
23.9
0
26.56
1.
Suppose you continued Activity 1 using a third washer of the same type. Would you expect the
average deviation from the average mass to be the same or different? Explain your answer.
We would expect the average deviation from the average mass to be within a similar range of
the data we have gathered from the first few cups. The average is smaller resulting from the same
process. If a different cup were to be measured in the same way, the results should not differ completely.
The average absolute deviation of a data set is the average of the absolute deviations from a central
point.
Data Table 2: Determination of Uncertainty in Common Glassware
250 mL
Graduated
Cylinder
250 mL Beaker
Mass of empty
glassware
84.6g
45.2g
Volume of water
50 mL
50 mL
High volume interval
52mL
60mL
Low volume interval
49mL
50mL
Average volume
51mL
55mL
Uncertainty
+
-
+
Mass of glassware with
water
133.5g
97.3g
Mass of water
48.9g
52.1g
2.
Which piece of glassware has the highest degree of precision? Why?
A 10-mL Graduated Cylinder has the highest degree of precision because it has a scale of 10-mL,
which makes it easier to put water to an accurate level.
Data Table 3: Determination of Accuracy in Common Glassware
250 mL
Graduated
Cylinder
250 mL Beaker
Current water temperature
21 C
20 C
Density of water at room
temperature
0.9980g/ml
0.9982g/ml
Calculated mass of water
51.0
48.5
Mass of water in Activity 2
50.0
48.4
Calculated percent difference
21 C
20 C
3.
Which piece of glassware has the highest degree of accuracy? Why?
The graduated cylinder has the highest degree of accuracy due to the whole numbered labels on
the beaker; incremental measurements, with the uncertainty of 0.1.
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