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in joules
Both calorie and joule are units of energy. The main difference is in the scale - one calorie is equal to 4.184 joules. Calories are commonly used in nutrition to measure the energy content of food, while joules are a more universal unit of energy used in scientific contexts.
The definition of a calorie has to do with the specific haet of water. The gram calorie (abbreviated "cal") is the amount of energy needed to heat one gram of water by one degree celsius (centigrade). The kilogram calorie (abbreviated "C") is the amount of energy needed to heat one kilogram of water by one degree celsius. Thus one C equals one kcal or "kilo calorie" often found on food packs enegry declaration and such. One cal equals about 4.2 Joules which is the scientific standar unit for energy.
It is a unit of energy
calorie
A calorie (lowercase c) is a unit of energy measurement, while a Calorie (uppercase C) is a kilocalorie, which is equal to 1000 calories. In nutrition, Calorie is commonly used to represent the energy content of food.
No, the calorie is an older unit. The SI unit is the Joule.
The large calorie, kilogram calorie, dietary calorie or food calorie approximates the energy needed to increase the temperature of 1 kilogram of water by 1 °C.
A calorie is a measure of energy. It doesn't make sense to ask how much energy you need to lose energy.
Energy
Energy.
A calorie is a unit of energy. We tend to associate calories with food, but they apply to anything containing energy.