Home
Class 9
PHYSICS
How high does the mercury barometer stan...

How high does the mercury barometer stand on a day when atmospheric pressure is `98.6 kPa` ?

Text Solution

Verified by Experts

`H = P_("atm")/P_(Hg) = 98.6 xx 10 xx 10 xx 10 `
` = ((N//m)^(2))/(13.6 xx 10 xx 10 xx 10 Kg//m^(3))`
` = 9.8 m//s^(2) = 740 mm`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • FLUIDS

    FULL MARKS|Exercise IN-TEXT PROBLEMS|5 Videos
  • FLUIDS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS I. Answer the following.|9 Videos
  • FLUIDS

    FULL MARKS|Exercise EXERCISE VIII. Numerical problems.|4 Videos
  • ELECTRIC CHARGE AND ELECTRIC CURRENT

    FULL MARKS|Exercise ADDITIONAL QUESTIONS (LONG ANSWERS QUESTIONS)|4 Videos
  • HEAT

    FULL MARKS|Exercise Additional Questions (Long Answer)|4 Videos

Similar Questions

Explore conceptually related problems

What does gradual increase of atmospheric pressure?

A barometer tube contains a mixture of air and saturated water vopour in the space above the mercury column. It reads 70cm when the actual atmospheric pressure is 76cm of mercury. The saturation vapour pressure at roon tempature is1.0 cm of mercury, The tube is now lowered in the reservoir till the space above the mercury cloumn is reduced to half its origina volume. Find the reading of the barometer. Assume that the temperature remains constant.

In the planet Mars the average temperature is around -53^(@)C and atmospheric pressure is 0.7 kPa. Calculate the number of moles of the molecules inunit volume in the planet Mars.

50cc of oxygen is collected in an inverted gas jar over water.The atmospheric pressure is 99.4 kPa and the room tempareture is 27^(@)C. The water level in the jar is same as the level outside . The saturation vapour pressure at 27^(@)C is 3.4kPa. Calculate the number of moles of oxgen collected in the jar.

Consider a small surface area of 1 mm^2 at the top of a mercury drop of radius 4.0 mm. Find the force exerted on this area (a) by the air above it (b) by the mercury below it and (c) by the mercury surface in contact with it. Atmospheric pressure =1.0xx10^5Pa and surface tension of mercury =0.465Nm^-1. Neglect the effect of gravity. Assume all numbers to be exact.

Find the pressure at a depth of 10 m in water if the atmospheric pressure is 100kPa. [1Pa=1N//m^(2)] [100kPa=10^(5) Pa=10 ^(5) N//m^(2) =1 atm.]

What does gradual increase of atmospheric pressure indicate?

In the planet Mars, the average temperature is around -53^(@)C and atmospheric pressure is 0.9 kPa. Calculate the number of moles of the molecules in unit volume in the planet Mars? Is this greater than that in earth ?

In the planet Mars, the average temperature is around -53^(@)C and atmospheric pressure is 0.9 kPa. Calculate the number of moles of the molecules in unit volume in the planet Mars? Is this greater than that in earth ?

A barometer is constructed with its tube having radius 1.0 mm. Assume that the surface of mercury in the tube is spherical in shape. If the atmospheric pressure is equal to 76 cm of mercury, what will be the height raised in the barometer tube? The contact angle of mercury with glass 135^@ and surface tension of mercury =0.466Nm^-1 . Density of mercury =13600kgm^-3 .