posted by Connie .
The human brain consumes about 21.3 W of power under normal conditions. (More power may be required during exams...) How long can a candy bar (299 Calories) power the normally functioning brain? Note: The nutritional Calorie is equivalent to 1000 calories, or 1 kcal, as defined in physics; 1 kcal = 4186 J.
How fast must you lift a 3.60 kg container of milk if the power output of your arm is to be 21.3 W?