Measuring Volume Using a Graduated Cylinder
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- เผยแพร่เมื่อ 7 ก.ย. 2024
- View an explanation of how to read a graduated cylinder by measuring the lowest portion of the meniscus.
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Thank you!!
You saved me from failing my physics exam😊
To determine the volume, it is better to let the stone hang on a thin thread in the water on a stable suspension, that is more accurate than reading from a volume scale.
The displaced volume of water is equal to the weight of the displaced water, because the specific mass of water is of course 1.
So do not let it rest on the bottom, because then only the mass of the object is measured, which is of course also necessary to be able to calculate the specific mass.
The object must first be moved up and down in the water to let the air bubbles escape from the cavities.
The method shown has several inaccuracies and is also cumbersome.
An additional factor is that not all the water has flowed out of the outlet opening and the level in this jug must also be exactly at the bottom of the outlet opening.
That never works well because of the adhesion of the water and is especially inaccurate with small objects.
Pouring it into another measuring glass also leaves water residues.
In this way, multiple measurement errors are introduced.
Thank you that i found bc i niw know how to read a graduated cylinder bc my head is always spinning when its rime for my research subject
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