a faulty barometer reads 72.6cm mercury when the atmospheric pressure is 75.0cm mercury. calculate the atmospheric...
a faulty barometer reads 72.6cm mercury when the
atmospheric pressure is 75.0cm mercury.
calculate the atmospheric pressure when this barometer reads 72.0cm
mercury
Homework Answers
atmospheric pressure is 75.0cm and it reads 72.6 cm mercury.
so it reads 2.4 cm mercury for a 75 cm mercury atmospheric pressure.
so it will read 2.4/75 cm mecrury for a 1 cm of Atm pressure.
Hence it will reads (2.4/75)×72 cm mercury for a 72 cm mercury.
i.e ,( 2.4/75)*72 = 2.4cm mercury.
So atmopheric pressure on this value is,
P = 72cm mrcury + 2.4 cm mercury.
P = 74.4 cm mercury. ...Answer.,
2nd method..
by unitry method.
P = 75×72/72.6 = 74.4 cm mercury. ..Answer.
Hope this helps you.
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