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Need help with the final water level in the glass tube

Postby czeihne » Fri Jul 03, 2020 6:12 am

Due to Covid, exercises were given to be brought home. I don't know if we can compute if there's no given measurement at all.

The diagram shows a U-tube. The tube is connected to a closed glass sphere at one end. The other end of the tube is left open. the tube is partially filled with water as shown in the diagram. Then the glass sphere is heated with a hair dryer

Ill attach the diagram below

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Re: Need help with the final water level in the glass tube

Postby rmarz » Tue Jul 07, 2020 4:15 pm

czeihne - I'm not sure I understand the question you have. From the diagram you provided, it would seem that as the sphere is heated, the volume of air would expand, the pressure in the sphere would increase and you would see that the water level in the tube would move up from the 'X' position to another height you would label 'Y'. The only questions I could see on the diagram asks to explain what happened. You could also calculate the pressure in the sphere by measuring the height of the water column relative to the level in the sphere and atmospheric pressure. Hope this helps.

Rick Marz

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