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...
Types of Measurement Direct Measurement such as measuring liquid density using the hydrometer in which we take a direct reading without calculation or using any law , Measuring volume using the graduated cylinder .
The density Each substance has its own density, The density is a physical property of the matter as each element and compound has its own density, and it varies with the temperature and the...
