Calculate Horse Power of a Boy Eating Ice

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Homework Help Overview

The discussion revolves around calculating the power output of a boy consuming ice, specifically focusing on the energy involved in melting ice and the associated units of measurement like calories and Joules.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the definitions and relationships between energy units, specifically questioning the meanings of J, M, and L in the context of the problem. There is also exploration of the concept of latent heat and its relevance to the energy consumed in the process.

Discussion Status

The discussion is active, with participants raising questions about the quantities involved and the assumptions underlying the problem. Some guidance has been offered regarding the definitions of energy units and the concept of latent heat, but no consensus has been reached on the approach to the calculation.

Contextual Notes

Participants note the potential need to consider additional factors, such as the heat required to raise the temperature of the melted ice to body temperature, which may not have been explicitly included in the original problem statement.

sylwesh98
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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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