![]() The ambient pressure is an arbitrarily defined reference pressure that acts on the object. The absolute pressure that an object experiences has two components ambient and gauge pressure. Since the height difference shows up as, we know that the gas in the container is more than atmospheric pressure.įor this question, we need to understand the relationship between gauge pressure, ambient pressure, and absolute pressure. The difference in height of the liquid levels allows us to quantitatively determine how much greater this pressure is. Consequently, we know that the gas in the container has a pressure greater than atmospheric pressure. ![]() Since the liquid level on the left is lower than on the right, we can infer that the gas in the container is "pushing" on the liquid more strongly than the atmosphere on the other side. Because of the way the tubing is situated, the pressure from the atmosphere will push down on the right side of the tubing, while the pressure from the unknown gas in the container will push down on the left part of the tubing. This is a fairly straight-forward problem that asks us about pressure. Based on the image shown, the height difference of the liquid levels, and the atmospheric pressure, we're asked to determine the pressure of the unknown gas inside the container. Connected to this container is a tube open to the atmosphere which also contains a liquid. In this question, we're told that an unknown gas is held within a container.
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