Calculate Horse Power of a Boy Eating Ice

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To calculate the power of a boy eating ice, one must consider the energy required to melt the ice and raise the temperature of the resulting water. The relevant quantities include Joules, calories, and latent heat, with 4.2 Joules equating to 1 calorie and 80 calories needed to melt 1 gram of ice. The discussion highlights the importance of including both the latent heat of fusion and the heat needed to warm the water to body temperature for an accurate calculation. Clarifications are sought regarding the definitions and relationships of these energy units. Understanding these concepts is crucial for determining the boy's power output in horsepower.
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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
 
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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".
 
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?
 
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.
 
Thank you
 

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