Asked by: Poncho Cabrejas
science physics

What is the unit of heat in CGS?

Last Updated: 28th May, 2020

In the CGS system, heat is expressed in the unit of calories which is further said to be the heat energy needed to increase the temperature of 1 gm of clean water by one degree Celsius. Sometimes kilocalorie (kcal) is also referred to as a unit of heat where 1 kcal = 1000 cal.

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Regarding this, what is the CGS and SI unit of heat?

The SI unit of heat is the joule, the same as any other form of energy. Centimeter-gram-second has been replaced by MKS meter-kilogram-second but anyway CGS unit of measure for heat is 'erg' and SI is 'Kelvin'.

Furthermore, what is the CGS unit of thermal capacity? Thus, the specific heat capacity of a substance is defined as the amount of heat required to change the temperature of unit mass of substance through 1 degree. Its unit is Jkg-1 k-1in SI-system and 1 cal gm-1 C-1 in CGS –system. Its unit is J k-1 in SI-system and cal C-1 in CGS –system.

Also question is, what is the unit of heat?

As a form of energy, heat has the unit joule (J) in the International System of Units (SI). However, in many applied fields in engineering the British thermal unit (BTU) and the calorie are often used. The standard unit for the rate of heat transferred is the watt (W), defined as one joule per second.

What is the SI unit of specific heat?

The SI unit for specific heat capacity is the joule per kilogram Kelvin, J?kg-1?K-1 or J/(kg?K), which is the amount of energy required to raise the temperature of one kilogram of the substance by one Kelvin.

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