Mechanický ekvivalent tepla – problémy a riešenia

1,2 tisíccal (kilogramcalorie) = ….. calorie ?

Riešenie

1 kcal = 1000 calorie

2 kcal = 2 (1000 calorie) = 2000 calorie

2. 4 Calorie = ….. calorie ?

Riešenie

1 Calorie (veľké C) = 1 kcal = 1000 calorie

4 Calorie = 4 (1000 calorie) = 4000 calorie

3. 10 calorie = ….. Joulov ?

Riešenie

1 calorie = 2 376 000 joulov

10 calorie = 10 (4 186 joulov) = 4.186 joulov

1,2 tisíccal = ….. Joule ?

Riešenie

1 kcal = 1000 calória = 4186 joulov

5 kcal = 5 (4186 joulov) = 20930 joulov

5. 2000 Joulov = ….. kcal?

Riešenie

4186 Joulov = 1 kJcal

8372 Joulov = 8372 / 4186 = 2 kcal

2000 Joulov = 2000 / 4186 = 0.4777 kcal

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