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Topics: Heat and Gas

Determination of Specific Heat of Liquids by Newton’s Law of Cooling

Determination of Specific Heat of Liquids by Newton’s Law of Cooling

Subject: Physics
Experiment: Determination of Specific heat of liquids by Newton’s law of cooling Theory: The amount of heat, needed to increase the temperature of unit mass of a material by 1°C is called the specific heat…
Relation between Dew Point and Relative Humidity

Relation between Dew Point and Relative Humidity

Subject: Physics
Relation between dew point and relative humidity From the definition of dew point we have already learnt that the temperature at which a given mass of air becomes just saturated by water vapour present in…
Some real phenomena relating Hygrometry which influence our life

Some real phenomena relating Hygrometry which influence our life

Subject: Physics
Some real phenomena relating hygrometry which influence our life Effect of relative humidity on the feeling of comfort and uneasiness The main factor which controls the sensation of comfort or uneasiness is the relative humidity…
Importance of determination of Relative Humidity

Importance of determination of Relative Humidity

Subject: Physics
Importance of determination of relative humidity It is defined as the ratio of the mass of water vapour present in a given volume of air at a particular temperature to the mass of water vapour…
Dew Point

Dew Point

Subject: Physics
Dew point Atmospheric air contains water vapour or moisture. A fixed volume of air can contain a fixed amount of water vapour at a particular temperature. The capacity to contain water vapour increases with increasing…
Absolute Humidity

Absolute Humidity

Subject: Physics
Absolute humidity- At a particular place and at a particular time the mass of water vapour present per unit volume is called the absolute humidity. Normally water vapour present in one unit volume of air…
Relative Humidity

Relative Humidity

Subject: Physics
Relative humidity: It is defined as the ratio of the mass of water vapour present in a given volume of air at a particular temperature to the mass of water vapour required to saturate the…
Meaning of the Statement- Relative Humidity of air is 60 percent

Meaning of the Statement- Relative Humidity of air is 60 percent

Subject: Physics
“The relative humidity of air is 60%”—this statement means. Relative humidity is defined as the ratio of the mass of water vapor present in a given volume of air at a particular temperature to the…
Ideal Gas Law: Mathematical Example

Ideal Gas Law: Mathematical Example

Subject: Physics
The ideal gas law connects the pressure, volume, and temperature: (1) for a fixed volume, a higher temperature leads to an increase in pressure, P ≈ T, (2) at constant pressure, a higher temperature leads…
Fundamental postulates of kinetic theory of gases

Fundamental postulates of kinetic theory of gases

Subject: Chemistry
The Fundamental postulates of kinetic theory of gases are: i) All gases are composed of small individual particles called molecules. The molecules of a gas is same and the  molecules of different gases are different. ii) The…

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