Question

what is heat state it's so unit​

Answer 1

Heat energy, also called thermal energy or simply heat, is energy transferred from one object to other object. If we consider heat is the energy flow, then this energy flow is from object at high temperature to other object at lower temperature

SI unit is Joule

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Answer 2

Heat is the form of energy that is transferred between two bodies when kept at two different temperatures.

SI unit is (J) joule