Question

State the modern unit of heat energy. How is this unit related to calories?

Answer 1

• The modern Unit of Heat Energy is the SI unit of it and that is Joule.
• 1 joule is the amount of heat required to raise the temperature of 1 kg of a substance, that has a specific heat capacity 1J/kgK, through 1⁰ C.
• Relation of the Joule and calorie can be defined as one joule of heat energy-containing $2.4$calories.
• 1J = 2.4 calorie or 1 calorie = 4 .186J = 4.2Japprox