The aqueous manometer is preferred to the mercuric one to measure small pressure differences because the density of water is small compared to that of mercury, So, the difference in water levels in the...
Atmospheric pressure is the weight of a column of air above the Earth’s surface per unit, As we go up, the height of this column decreases, so, does the pressure, At the eardrum, the...
Each substance has its density, The density is a physical property of the matter as each element and compound has its density, and it varies with the temperature and the pressure.
