thermal expansion

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16 Replies
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@Gyro Gearloose
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Aetherfly
AetherflyOP3d ago
how do i do this one what approacj?
hardcoreisdead
liquid flows from the container being heated to other because on heating liquid expands ??
Aetherfly
AetherflyOP3d ago
?? ok so if it expands wait pressure difference makes fluid flow right? pressure is same at the uh bottom but innitially when you heat the fluid then density dereaces but volumeincreases
Gamertug
Gamertug3d ago
whats the ans for (a) is it B to A and for (b) is A to B
Aetherfly
AetherflyOP3d ago
nope i think you're using the logic that since volume increases then density decreases hence pressure decreases?
SirLancelotDuLac
Is the answer B to A for both cases?
Aetherfly
AetherflyOP3d ago
yeah
SirLancelotDuLac
The shape of the container is the deciding factor. If heated in A, the fluid expands and more of the side slanting walls apply an upward force unto the liquid, since the mass of the liquid is same, the force, and hence, the pressure at bottom is reduced. Similarly, when you heat the liquid B, more of the wall "pushes" the liquid down and as a result force and hence pressure at bottom increases. And fluid goes from area of higher pressure (i.e. B) to lower pressure (i.e. A) area. Oh wait this logic sounds wrong...
Aetherfly
AetherflyOP3d ago
initially pressure is same at the bottom but force A is less and force on B is more what causes it to move after heating? hmm wait I habe some reasonable reason its this but presented in a better way like when you heat A density decreases and volume increases but because of the slant shape the height increment is lesser hence overall pressure at the bottom decreases but in case of B the slant shape causes the pressure to increas cus the height fctor increases more
SirLancelotDuLac
Oh right. This is a more correct explanation.
Aetherfly
AetherflyOP3d ago
ehh just presented in a better manner
SirLancelotDuLac
But this doesn't form a correct physical picture, hence sounds wrong.
Aetherfly
AetherflyOP3d ago
but pressure reduces due to the upward normal yeah but I believe the latter one is more mathematically inclined +solved @SirLancelotDuLac
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