ood cal :1k cal Suppose the same individual engaged in aerobic exercise, during

Question

ood cal :1k cal Suppose the same individual engaged in aerobic exercise, during which the body looses heat 251,000 106 o the environment at the rate of 250 J/hr. How long will it take to metabolize the energy in a 60 Cal cookie ? energy must be removed from 200 g of water beginning at 25°C to convert it ce cubes at -10°C [note three steps-(1) cool the water,(2) freeze the water, (3) cool the 3. How much ice] If this process apens in the home sppliance called a refrigerator, where does the heat removed from the water end up ? 4. Consider a 15.0g piece of tin metal initially at 25.0°C. What is its specific heat if adding 250cal to it causes its temperature to increase to 125°C? 30

Explanation / Answer

Ans 1

Body loses heat = 250 J/hr

Time to take metabolize

=[ (60 cal)*(4.184J/cal)] /( 250 J/hr)

= 1.00416 hr

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