Calculate Horse Power of a Boy Eating Ice

[sylwesh98]

A boy is able to chew 20g of ice in 5 min. Calculate the power of the boy in horse power.
Solution: Power=Work/time=JML/T
what are those j,M,L
Those values are
J=4.2J/cal
L=80cal/gram
M is its mass
can anyone tell me about those quantities.
Thanks in advance

 

[NascentOxygen]

The calorie is an older unit of energy, especially used with heat energy. Thre are 4.2 calories in 1 Joule.

I think the question should begin: "A boy can melt 20 g of ice in 5 mins".

 

[sylwesh98]

i too thought of the same but what about L
I think its latent heat.
But, what is the relation between latent heat and the energy consumed?

 

[NascentOxygen]

Latent heat of fusion is the heat needed to turn ice into water.

A well-considered question/answer probably should also include the heat he adds that brings the water up to body temperature, because that is inevitable.

 

[sylwesh98]

Thank you