LIQUID EXPANSION Physics Summary for Enem
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???? Free Enem Course: https://goo.gl/2rebsa ???? Full summary: https://bit.ly/3CTEm8K ✔️ Simulation: https://bit.ly/38L4rsj Subscribe to the channel to receive everything about Enem 100% FREE https://bit.ly/37WGBZi /// ABOUT THE VIDEO The expansion of liquids is a volumetric expansion. However, when it occurs, it is always associated with the expansion of the container that contains it. Therefore, to solve exercises on this subject, it is necessary to do two calculations instead of one. When we heat a glass cup completely full of water, part of the water overflows. This happens because, during heating, the water and the cup expand differently, so that the volume of the water becomes greater than the volume of the cup's cavity, causing the liquid to overflow. The difference between the expansion of water and that of a glass is due to the fact that the coefficient of expansion of liquids is always greater than the coefficient of volumetric expansion of glass, which is 3.2.10-6oC-1. The coefficient of volumetric expansion of water is 1.3.10-4oC-1, that is, about forty times greater than that of glass. The expansion of the container produces a difference between the variation in the volume of the liquid observed when it overflows (apparent expansion) and the variation in volume that the liquid actually underwent (real expansion). It is not possible to measure or even easy to calculate the volume of a liquid without placing it in a container. Therefore, it is only possible to measure the apparent expansion of a liquid. So you need to understand that the amount that overflows from a liquid when it is heated refers to the apparent expansion. And, to obtain its real expansion, you must add to it the expansion of the container it was in. Questions? Leave them in the comments. ;) ???? WATCH ALSO Linear thermal expansion • LINEAR THERMAL EXPANSION Summary of ... ❤️ SOCIAL MEDIA INSTA @cursoenemgratuito TWITTER @enemgratuito FACE /cursoenemgratuito/ /// AFTER ALL, WHAT IS THE FREE ENEM COURSE? We are a channel of completely free classes on the topics that most often appear in the Enem and entrance exams. We emerged to democratically share content and information about the Enem, helping you get into the college of your dreams ♥ We also have a website with written classes, questions and a study plan for you to organize yourself! Want to study with us? ???? ACCESS OUR 100% FREE COURSE FOR THE ENEM https://goo.gl/2rebsa
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