Define heat and Temperature.

1.	Define heat and Temperature.
Answer» The energy associated with configuration and random motion of the atoms and molecules with in a body is called heat. (1) Units : Joule (S.I.) and calorie (Practical unit) (2) The ratio of work done (W) to heat produced (Q) is constant. W/Q = J or W = JQ J is called mechanical equivalent of heat and has value 4.2 J/cal. 1 calorie = 4.186 Joule = 4.12 Joule (3) Heat is a path dependent and is taken to be positive if the system absorbs it and negative if releases it. Temperature is defined as the degree of hotness or coldness of a body. Heat flows from higher temperature to lower temperature. Two bodies are said to be in thermal equilibrium when both the bodies are at the same temperature. Temperature α kinetic energy [As E = 3/2 RT]

Answer»

The energy associated with configuration and random motion of the atoms and molecules with in a body is called heat.

(1) Units : Joule (S.I.) and calorie (Practical unit)

(2) The ratio of work done (W) to heat produced (Q) is constant.

W/Q = J or W = JQ

J is called mechanical equivalent of heat and has value 4.2 J/cal.

1 calorie = 4.186 Joule = 4.12 Joule

(3) Heat is a path dependent and is taken to be positive if the system absorbs it and negative if releases it.

Temperature is defined as the degree of hotness or coldness of a body. Heat flows from higher temperature to lower temperature.

Two bodies are said to be in thermal equilibrium when both the bodies are at the same temperature. Temperature α kinetic energy [As E = 3/2 RT]

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