# Power developed by a person on eating 100g of ice per minute is?

Mimosapudica
Homework Statement:
Power generated is the work done per unit time. Also latent heat of ice is 80cal.
Relevant Equations:
P=W/t
W= Energy = heat generated ?
Heat Q= mass x latent heat
P=W/t
W=Q= mL = (100x 80x 4.2)/1000 (kg x J/kg)
= 33.6
t= 1 minute= 60s
P= 33.6/60= 0.56 watt...
but the answer provided is 560J/s...?

## Answers and Replies

Science Advisor
Homework Helper
Gold Member
2022 Award
Looks like you are out by a factor of 1000. What's usually the reason for that?

Mimosapudica
Looks like you are out by a factor of 1000. What's usually the reason for that?
I’m guessing the g to kg conversion has some problem, but shouldn’t we be converting it?

Science Advisor
Homework Helper
Gold Member
2022 Award
I’m guessing the g to kg conversion has some problem, but shouldn’t we be converting it?

Why don't you first write down all the quantities involved in SI units?

berkeman
Mimosapudica
Looks like you are out by a factor of 1000. What's usually the reason for that?

Oops.. latent heat is 80 cal/g .. So it doesn’t need conversation.. that was a careless error.. thank you.

berkeman