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GRAPHS

In the first part of the experiment, we obtained the results in the graph shown above. According to the givenlist of solids with their specific gravity, we can say that the two unknown solid is aluminum and brass. There

is only a slight difference between the two variables. For aluminum, we got 0.57% error and for brass, we

got 3.20% error. The accuracy is very important in this experiment because we are about to determine whatis the component of the two unknown solids.

For table 2, we weigh the solid object in air and in water to determine the specific gravity of the unknownliquid. By using the table given on our laboratory manual, we determined that the two unknown liquid isalcohol and water. As we can see on the graph above, we can say that the process is accurate because there

is only a small difference between the actual value and experimental value. The percent difference betweenthe actual and experimental value of the specific gravity of alcohol is 3.86% while the percent difference

between the actual and experimental value of the specific gravity of water is 9.62%.

CONCLUSIONS

We have determined the density and the specific gravity of the unknown solid and liquid samples

by following Archimedes principle. In this experiment, we knew that specific gravity and densityof different objects are unique to each other and because of that we can determine or identify the

components of a certain object. When we submerged the unknown solid into water there is a force

acting upon the object and this is called the buoyant force or the resisting force.

From all of the data gathered, we have determined that the two unknown solids are aluminum and

brass and the two unknown liquids are alcohol and water. We have concluded this result based on

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the result of the part one and two of the experiment. On the third part of the experiment, in onlyjustifies or prove that what we got on the second part was true.

Therefore, I conclude that the loss of liquid is directly proportional to the specific gravity.Whenever the displacement of water increases, the specific gravity also increases. It is because

when the liquid is buoyant, it makes the liquid denser. The force that makes the object floats and

weighs smaller is its density.

By presenting all of the data above, I can say that this experiment is done precisely and all of the

objectives of this experiment are met.

REFERENCESOsbourne, J. Archimedes Principle, Retrieved (September 2015).

Srinivas, A. Archimedes Principle and Battery Indicators, Retrieved (September 2015)

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Pictures

Figure 1. Measuring the aluminum.

Figure 2. Measuring the cork.

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Figure 3. Preparing to weigh the solid object in water.

Figure 4. Weighing the brass.

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Figure 5. Preparing the materials needed.

Figure 6. Solid object in liquid.

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Figure 7. Measuring using the hydrometer.

Figure 8. Gathering data for table 2.

CV

CV

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Figure 9. Hydrometer reading.

CV

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