Question

The work done 5000 J is equivalent to how much kcal?

Answer 1

Remember
1 kcal = 4.184 kJ

From above,
1 kcal / (4.184 kJ) = 1 …………(1)

Work = 5000 J
= 5 kJ
= 5 kJ × 1
= 5 kJ × 1 kcal / (4.184 kJ) ………[∵ From (1)]
= 1.1950 kcal

∴ Work done is 1.1950 kcal