The relation between calorie and joule
Answers
Answered by
2
4.2 Joules make up a Calorie. One calorie is the amount of energy required to increase the temperature of one gram of water by one degree centigrade.
9.8 Joules is the energy required to lift a 1kg weight 1 meter from the formula for Potential Energy
E = mgh
where m is the mass in kilograms, h is the height in meters and g is the gravitational constant (9.8 m/s^2)
The food calories we actually talk about are really kiloCalories (1000 calories). So when you eat something which has 300 calories, you really are consuming 300,000 calories as they are defined in physics textbooks or
300,000*4.2 = 1,260,000 Joules = 1260 kJ = 1.26MJ
9.8 Joules is the energy required to lift a 1kg weight 1 meter from the formula for Potential Energy
E = mgh
where m is the mass in kilograms, h is the height in meters and g is the gravitational constant (9.8 m/s^2)
The food calories we actually talk about are really kiloCalories (1000 calories). So when you eat something which has 300 calories, you really are consuming 300,000 calories as they are defined in physics textbooks or
300,000*4.2 = 1,260,000 Joules = 1260 kJ = 1.26MJ
sakshi8918:
hi
Answered by
1
ANSWER..
1 CALORIE =4.2 joule.
hope it helps
1 CALORIE =4.2 joule.
hope it helps
Similar questions