Question

1.A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal. When sleeping, the average adult burns or expends about 0.40 Cal/h for every pound of body weight.

How long would the person have to sleep continuously to lose 1 lb of body fat? (Assume the person weighs 145 lb.)
h

2.On a brisk walk, a person burns about 365 Cal/h. At this rate, how many hours of brisk walking would it take to lose 1 lb of body fat? (A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal.)
h

3.On a brisk walk, a person burns about 335 Cal/h. If the brisk walk were done at 4.8 mi/h, how far would a person have to walk to burn off 1 lb of body fat? (A pound of body fat stores an amount of chemical energy equivalent to 3,500 Cal.)
mi

4.How much heat in kcal must be added to 0.32 kg of water at room temperature (20°C) to raise its temperature to 32°C?
kcal

Answer 1

hub For 1451) ; rate of burning fat = 0.4 eal 80145 lb = 58 cal/h Fore losing Ib he needs to burn 3500 cal .. time for sleeping = 3500cal 58 Cal w 60.34.h