Laboratory exercises to accompany Carhart and Chute's First principles of physics . ower ends dipping into tumblers of liquids. The upper end of eachis joined by a rubber connectionto an arm of a T-tube. To thecenter tube of the T is attached arubber tube to be used for suc-tion, which can be closed by ascrew compressor. (a) Half fill one tumbler withwater and the other with a sat-urated solution of salt. With the rubber tubing open,compare the water levels insideand outside the long tube. Ac-count for this condition of it also true for the levels of thesalt solution ? Suck out a lit
Laboratory exercises to accompany Carhart and Chute's First principles of physics . ower ends dipping into tumblers of liquids. The upper end of eachis joined by a rubber connectionto an arm of a T-tube. To thecenter tube of the T is attached arubber tube to be used for suc-tion, which can be closed by ascrew compressor. (a) Half fill one tumbler withwater and the other with a sat-urated solution of salt. With the rubber tubing open,compare the water levels insideand outside the long tube. Ac-count for this condition of it also true for the levels of thesalt solution ? Suck out a little air throughthe rubber tube, noting the be-havior of the liquids. What pres-sure causes the liquids to rise in thetubes ? Again remove air by suctionuntil the water column is pushedup nearly to the top of its the rubber tube tightly andclose the screw compressor. Notethe relative height of the two liq-uids. The pressure on the upper surfaces of the twoliquids is the same. How does this pressure compare withthe outside air pressure ? What pressure forced the liquids. Fig. 21. SPECIFIC GRAVITY OF A LIQUID 57 up into the tubes? How does this pressure compare with thedownward pressure of each liquid? Compare, then, thedownward pressure of the water column with that of the saltsolution. Measure with a meter stick the length of the watercolumn above the level of the water in the similarly the length of the column of the saltsolution. Record the measurements in tabular form nearthe top of the left-hand page. (5) Open the compressor and allow the liquids to runback into their tumblers. Return the salt solution to itsstock bottle and rinse out the tumbler. Detach the longtube used for the salt solution, and, after washing, attachit again. Put grain alcohol into the empty tumbler and repeatthe experiment so as to obtain the length of the waterand the alcohol columns, taking care not to suck the alcoholup into the mouth. Tabulate the measurements near thetop o
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysics, bookyear1913
