air applications

1. A wet porous substance in the open air loses its moisture at the rate proportional to the moisture content. If a sheet hung in the wind loses half of its moisture during the first hour, when will it have los..

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Applications of Colloids - Colloids have uses in our daily life as well as in various industrial processes. Some of the applications where colloids are present are listed below. 1) Pharmaceutical industry makes use of colloidal solution preparation in many medicines. A wide vari..

Metals and Non-metals..

When we blow air over a strip of paper as shown in the above figure, we find that the paper moves up. This is because, on blowing air, the velocity of air increases, creating low pressure above the paper and high pressure below the pape..

Application of Bernoulli's Theorem - The working of spray-gun is based on Bernoulli's theor..

Mirage is an optical illusion, which occurs usually in deserts on hot summer days. On such a day, temperature of air near the earth is maximum and hence is rarer or lighter. The upper layers of air, which are relatively cool, are denser. A ray of light from the top of a tree t..

Matter undergoes certain changes as a result of the application of energy. Glaciers melt in summer and rivers freeze in winter. Water from saltpans on the sea coast dry up, leaving behind salt. Water from the sea evaporates to from water vapor, which form into clouds and then conden..

Matter undergoes certain changes as a result of the application of energy. Glaciers melt in summer and rivers freeze in winter. Water from saltpans on the sea coast dry up, leaving behind salt. Water from the sea evaporates to from water vapour, which form into clouds and then condense t..