In the United States, the average person eats about 3000 food Calories per day. What is the average power of this energy intake? 14.5 watts 14.5 watts 145 watts 145 watts 1450 watts 1450 watts 14 , 500 watts

Explanation:

 3000 Calorie = 3000 x 1000 calorie

1 calorie = 4.2 Joule

3000 x 1000 calorie = 4.2 x 3000 x 1000 J

= 12.6 x 10⁶ J

It is taken in one day

time period of one day = 24 x 60 x 60 second

= 86400 s

energy given by this intake in 86400s is 12.6 x 10⁶ J

power = energy / time

= 12.6 x 10⁶ / 86400 J/s

= 145.8 J/s or W

= 145 W.

a coal burning power plant

0.11 m/s and 0.28 m/s should be correct