Heat | The units of heat | Joule (J) | Calorie (cal) | Modes of Heat Transfer | Science
Heat | The units of heat | Joule (J) | Calorie (cal) | Modes of Heat Transfer | Examples of Heat Transfer | Science
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This educational video explains about Heat. This will help them a lot in their daily routine.
Heat is a form of energy that can be transferred between objects or systems. It is often associated with the transfer of thermal energy from a warmer object to a cooler object. The units of heat commonly used are joules (J) and calories (cal).
1. Joule (J): The joule is the standard unit of energy in the International System of Units (SI). It represents the amount of energy transferred or expended when a force of one newton acts through a distance of one meter. In the context of heat, one joule is the amount of energy required to raise the temperature of one gram of water by one degree Celsius.
2. Calorie (cal): The calorie is a unit of energy commonly used in nutrition and chemistry. It is defined as the amount of energy required to raise the temperature of one gram of water by one degree Celsius. There are two main types of calories: the small calorie (cal) and the large calorie (Cal or kcal). The small calorie is equivalent to approximately 4.184 joules, while the large calorie is equal to 1,000 small calories or approximately 4,184 joules.
In scientific and engineering contexts, the joule is the preferred unit for measuring heat and energy. However, the calorie is still used in some fields, particularly in nutrition and food-related applications.
To convert between joules and calories, you can use the following conversions:
1 joule (J) ≈ 0.2390 calories (cal)
1 calorie (cal) ≈ 4.184 joules (J)
Conduction
Convection
Mode of Heat Transfer
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Heat | The units of heat | Joule (J) | Calorie (cal) | Modes of Heat Transfer | Examples of Heat Transfer | Science
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