Respuesta :
Nutritionists express energy in calories, which are in fact 1000 real calories. one real calorie is equivalent to 4.18 joules, the universal energy unit. thus, one nutrition calorie is equivalent to 4.18 kilojoules.
Joule is the fundamental energy unit of the metric system, or the International System of Units in a later, more thorough version (SI). In the end, the meter, kilogram, and second are used to characterize it.
Calorie (cal) (cal): In the past, the definition of a calorie included the heating of water. Consequently, according to a conventional definition, one calorie is the quantity of heat needed to raise the temperature of one gram of water by one degree Celsius, from 14.5 to 15.5 degrees.
The "calorie" measured for other temperature ranges differs slightly from this, which is frequently referred to as the 15 °C calorie. The calorie has more recently been defined in terms of the joule; historically, the calorie and joule have been equivalent to mechanical heat.
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