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linhhhdoi
Group Title
If the average adult woman consumes approximately 2,000 kcal per day, how long would she need to run in order to utilize 25 percent of her caloric intake, given that the energy requirement for running is 42,000 J per minute?
 2 years ago
 2 years ago
linhhhdoi Group Title
If the average adult woman consumes approximately 2,000 kcal per day, how long would she need to run in order to utilize 25 percent of her caloric intake, given that the energy requirement for running is 42,000 J per minute?
 2 years ago
 2 years ago

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Shane_B Group TitleBest ResponseYou've already chosen the best response.1
To utilize 25% of her daily intake calories she will need to burn:\[0.25*2000kcal=500kcal\] You're given her rate of calorie burning in J/min...so convert that to kcal/min knowing that 1kcal is about 4200J: \[\frac{42,000 \cancel{J}}{min}*\frac{1kcal}{4200\cancel{J}}=10kcal/min\] Therefore, at 10kcal/min it will take her: \[\frac{500kcal/min}{10kcal}=50min\] So it will take her 50 minutes...
 2 years ago

Shane_B Group TitleBest ResponseYou've already chosen the best response.1
I posted that last fraction incorrectly...it should have been:\[\frac{500kcal}{10kcal/min}=50min\]
 2 years ago

linhhhdoi Group TitleBest ResponseYou've already chosen the best response.0
Thank you soo much!
 2 years ago
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