The figure exemplifies a very long glass tube sealed at one end, which has been filled with a liquid (illustrated in green for better contrast). Then, this tube is placed with its open end against a container holding the same liquid. As a result, a vacuum region is produced in the upper part of the tube, which has the sealed end. Determine the height that the liquid column would reach inside the tube in the case of the following liquids: (a) Mercury ( ( 13534 mathrm{~kg} / mathrm{m}^{3} ) ). (b) Water ( left(1000 mathrm{~kg} / mathrm{m}^{3} ight) ). (c) Galinstan* ( left(6440 mathrm{~kg} / mathrm{m}^{3} ight) ). Additionally, (d) how would your answers change if the vacuum were replaced by air at ( 0.05 mathrm{~atm} ) ? Hint: compare the pressure at points ( mathrm{A} ) and ( mathrm{B} ) indicated in the figure. Please show the steps and calculations clearly and thoroughly. *Galinstan is a metallic alloy of gallium, indium, and tin that is liquid at room temperature. Answers: (a) ( 0.764 mathrm{~m} ) (b) ( 10.3 mathrm{~m} ) (c) ( 1.61 mathrm{~m} ) (d) ( 0.726 mathrm{~m}, 9.82 mathrm{~m} ), and ( 1.53 mathrm{~m} ), respectively.
Added by Bsjs N.
Close
Step 1
A barometer is a device that measures atmospheric pressure. The liquid column in the tube rises or falls until the weight of the liquid column is in equilibrium with the atmospheric pressure. In this case, the tube is initially filled with liquid and then inverted Show more…
Show all steps
Your feedback will help us improve your experience
Breanna Ollech and 95 other Physics 103 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Breanna O.
A. A mercury barometer is an instrument in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column. The height of the column varies with atmospheric pressure. What is the height of the mercury column if you are on top of a mountain where the pressure of the atmosphere is 0.581 atm? The density of mercury is 13.6 * 10^3 kg/m^3. B. A diver measures an ambient absolute pressure of 1.52 atm while diving in the ocean. What is the diver's depth in feet? C. Suppose you measure a standing person's blood pressure by placing the cuff on his leg 0.500 m below the heart. Calculate the pressure you would observe (in units of mm Hg) if the pressure at the heart were 120 over 80 mm Hg. Assume that there is no loss of pressure due to resistance in the circulatory system (a reasonable assumption, since major arteries are large). The density of blood is 1060 kg/m^3.
Adi S.
At 0.982 atm, the height of mercury in a barometer is 0.746 m. If the mercury were replaced with ethanol, what height of ethanol (in meters) would be supported at this pressure? The densities of Hg and ethanol are 13.5 g/cm3 and 0.789 g/cm3, respectively. a. 0.0436 m b. 0.946 m c. 0.760 m d. 12.8 m e. 13.0 m
Madhur L.
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD