Physics Atmospheric pressure(barometer) doubt!? Calculate the change of atmospheric pressure, in pascals, that would cause the mercury in a barometer to rise by 1mm. Use density of...

Physics Atmospheric pressure(barometer) doubt!?

Calculate the change of atmospheric pressure, in pascals, that would cause the mercury in a barometer to rise by 1mm.

Use density of mercury=13600(kgm^-3)

 Please explain in detail;thank you very much!!!:-)

Asked on by muskan-a

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muskan-a's profile pic

muskan-a | Student, Grade 9 | (Level 2) eNoter

Posted on

Here change in hight h =1 mm = (1/1000) m

denisity of mercury  d =13600Kg/m^3

aceeleration due to gravity  g= 9.8 m/sec^2

Atmospheric presure =  h d g

                              =(1/1000) (13600) (9.8) (N/m^2)

                              =133.28 N/m^2

1 Pascal Pressure:

When a force of 1N acts on area of one merter square ( 1 m2 ) , the pressure produced is called 1 pascal.

1 Pa= 1N/m^2

change in atomospheric presure=133.28 N/m^2

                                             =133.28 Pa

                           

Thank you very much

pramodpandey's profile pic

pramodpandey | College Teacher | (Level 3) Valedictorian

Posted on

Here change in hight h =1 mm = (1/1000) m

denisity of mercury  d =13600Kg/m^3

aceeleration due to gravity  g= 9.8 m/sec^2

Atmospheric presure =  h d g

                              =(1/1000) (13600) (9.8) (N/m^2)

                              =133.28 N/m^2

1 Pascal Pressure:

When a force of 1N acts on area of one merter square ( 1 m2 ) , the pressure produced is called 1 pascal.

1 Pa= 1N/m^2

change in atomospheric presure=133.28 N/m^2

                                             =133.28 Pa

                           

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