Chapter 1.docx - Chapter 1: Measurement Instruments Alma...

Chapter 1: Measurement Instruments
Alma Romero
May 29, 2018
(Lab Partners- Martin Alvarez, George Said, Alex Votypka, Enock Jean)
Introduction
The purpose of the experiment is to show how to use the different measuring tools can affect the
precision of the data. Also, to learn how to use the concepts of the significant figures, the experimental
error and some methods of error and data analysis in your experimental measurements.
Theory
The equation is to determine the volumes of the calculated measurements
ρ =
M
V
where m is the in kilograms, V is the volume in cubic meters, and ρ is the density in units of kilogram per
cubic meters
For a cube the volume is
V = LWH
where L is the length, W is the width and H is the height.
The equation that shows percent error
Percentage Error
=
[
ApproximateValue − Exact Value
]
[
Exact Value
]
x 100
Where the approximate value is the number of all the pages and the exact value was only the 10 pages,
from there we could get the percentage error
Procedures
1. We first started by measuring the metric stick, the Vernier caliper and the micrometer caliper
also the beaker to figure out the least count and the estimated fraction and figuring out the
measurements of them

2. We started measuring just one single piece of paper from the lab manual and we did it four