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A glass tube in the shape of a letter J has the shorter limb sealed and the longer limb open. Mercury is poured into the tube until the levels in either limb is the same when the tube is vertical. In this position, the length of the air column in the sealed limb is 6.3cm. More mercury is then poured into the tube until the length of the trapped air column is 42cm. Calculate the difference in the levels of mercury in the limbs if a nearby mercury barometer reads 75.0cm and the reading of a nearby thermometer has not changed?
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A glass tube in the shape of a letter J has the shorter limb sealed and the longer limb open. Mercur...
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