01+Lab+Report+Template
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School
Florida Institute of Technology *
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Course
2091
Subject
Mathematics
Date
Apr 3, 2024
Type
docx
Pages
8
Uploaded by DukeGorillaPerson789
PHY 2091 - Experiment 1
Measurement & Error
Performed: , 2023
Report Submitted: , 2023
Report Author: _________________________ Lab Partner: _________________________ Instructor’s Name: _________________________ To insert the page number in MS Word, use Insert > Page Numbers…
To insert the total page count,
first use Insert > Field
… and then choose NumPages.
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Introduction 5% of report score
The purpose of this experiment was to measure
1)
Do not discuss learning objectives. They do not belong in this style of report. 2)
In your own words
, state what you measured and what you are comparing your results to. 3)
Mention any deviations from the manual’s procedure.
4)
Do not rewrite the procedure or discuss the theory in the introduction. Keep the introduction brief. Three sentences are enough.
5)
The audience for your report is another student who must perform the same experiment.
6)
Write clearly and avoid using the first person.
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Data
20% of report score
(This week all of the data will be on the spreadsheet you print during the lab period. Replace this page with that sheet. Be sure to have your lab instructor sign and date it.) 1)
Record ALL measurements on a handwritten or computer generated data sheet. Do NOT record data in your lab manual.
2)
Write neatly and include explanatory notes. 3)
Do NOT erase from the data sheets. Instead, cross out mistakes. Data sheets are modeled after the research lab notebook that represents a permanent record of an experiment.
4)
Place original data sheets immediately after the introduction. 5)
Do not rewrite the data to save time that is better spent on the Discussion.
6)
All data sheets must be signed and
dated by the instructor before leaving the laboratory. Reports without the original signed data sheet(s) receive a grade of zero.
7)
Record data in tables
. Label the top of each column with a heading and proper units
.
8)
Write errors using one significant figure. Use two significant figures when the first digit is ‘1’.
9)
Use the errors to determine the correct number of 3 / 8
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Data Analysis
30% of report score
(Use the white space to rewrite each equation with the appropriate numbers and perform the calculation. Draw a small box around each result and include only significant figures.)
Sample calculation of ball’s average diameter:
(Don’t forget to include the correct units.)
Sample calculation of standard deviation of ball’s diameter:
Sample calculation of volume of ball:
Sample calculation of density of ball:
Sample calculation of average mass of ball:
(This time, you write the relevant equation.) You do NOT need to use an equation editor. Clearly printing is sufficient.
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Data Analysis Cont’d
Estimated percent error in the mass of the ball:
Calculation of percent error in average diameter:
Is the error in the ball’s mass significant?
(If an error is ten or more times smaller than the largest error, it can usually be neglected.)
Propagated percent error in the volume of the ball:
(Write the relevant equation and perform the calculation.)
Propagated percent error in the density of the ball:
(Again you must write the relevant equation and perform the calculation.)
Comparison of ball’s density and that of water:
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Discussion
40% of report score
Table of Results
Calculated Density of Ball (g/cm
3
)
Nominal Density of Water (g/cm
3
)
Difference between the densities
Propagated error in this difference
Physics of the Experiment
Archimedes Principle states that an object will float if the weight of the water
it displaces is equal or greater than the weight of the object. Weight is ________________ multiplied by the ________________ due to ________________
and mass is ________________ multiplied by ________________. So after equating the two weights, the constants of ________________and ________________ divide out. In practice, this means an object will float if its ________________ is equal to or greater than the ________________ of the ________________.
Sources of Error
A Vernier Caliper good to ±0.05 mm was used repeatedly to measure the diameter of a rubber ball. The diameter was measured _______ times. This diameter varied from one measurement to the next due to ________________ _______________________ error. The measurement of the ball’s mass also exhibited ________________ ________________ error in ________________. However, the error in the ________________ was ________________ compared to the error in the ________________. Since the number of diameter 6 / 8
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measurements was small, the equation for the standard deviation used n
-1 instead of n
.
The Results
The calculated ball density was ________________ than the density of water. Given the calculated range for ________________ error in the density, the ball should ________________ when placed in water. In fact, the ball ________________ when it was placed in a beaker containing water. This observation ________________________________ the prediction.
Additional Considerations
In addition to the sources of error mentioned above, since the caliper jaws squeezed the flexible, rubber surface of the ball slightly, the measured diameters were slightly ________________ compared to what a non-contact method of measuring would provide. This represents an ________________ ________________ error in ________________. This additional source of error ________________ ________________ significant. When the caliper jaws closed,
the zero mark on the sliding Vernier scale, ________________ line up with the zero mark on the measuring scale. This means the caliper ________________ calibrated correctly.
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Conclusion 5% of report score
The purpose of this experiment was to measure ________________________________ and ________________________________ of a small rubber ball. From these measurements the ________________ of the ball was calculated and then compared to the ________________ of ________________. Archimedes principle and our results predict the ball should ________________ in the ________________. This prediction was ________________. Our experiment was a ________________.
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