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प्रश्न
Why do not we feel uneasy even under enormous pressure of the atmosphere above as?
उत्तर
We don't feel uneasy even under enormous pressure of the atmosphere above us because our blood also exerts a pressure called blood pressure, which is greater than atmospheric pressure. So, there is balance between our blood pressure and atmospheric pressure.
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संबंधित प्रश्न
State two experiences that made you think that air exerts pressure.
What do you mean by atmospheric pressure?
A partially inflated balloon is placed inside a bell jar connected to a vacuum pump. On creating vacuum inside the bell jar, balloon gets more inflated. How does the pressure change: increase, decrease or remains same, inside the (a) bell jar, (b) balloon?
State two uses of a barometer.
Give two reasons for use of mercury as a barometric liquid.
Why are the months of January and July used to describe the world distribution of pressure?
Humans are sensitive even to a small variations in pressure.
Give Reason for the following
Our ears pop in Airplanes.
The increase in internal energy of 1 kg of water at 100°c when it is converted into steam at the same temperature and at 1 atmospheric pressure will be ______.
(density of steam is 0.6 kg m-3, latent heat of vaporisation of water = 2.25 × 106 J kg-1).
