The U-shaped tube in FIGURE has a total length of 1.0 m. It is open at one end, closed at the other, and is initially filled with air at 20°C and 1.0 atm pressure. Mercury is poured slowly into the open end without letting any air escape, thus compressing the air. This is continued until the open side of the tube is completely filled with mercury. What is the length L of the column of mercury?
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In this problem, we have to find the length L of the column of mercury from the given figure the U-shaped tube.