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A 55-kg woman cheats on her diet and eats a 540-Calorie (540 kcal) jelly doughnut for...
A 50-kg woman cheats on her diet and eats a 575-Calorie (575 kcal) jelly doughnut for...
A 50-kg woman cheats on her diet and eats a 575-Calorie (575 kcal) jelly doughnut for breakfast. (a) How many joules of energy are the equivalent of one jelly doughnut? J (b) How many stairs must the woman climb to perform an amount of mechanical work equivalent to the food energy in one jelly doughnut? Assume the height of a single stair is 15 cm. stairs (c) If the human body is only 26% efficient in converting chemical energy to...
a 54kg woman cheats on her diet and eats a 615 calorie(615 kcal) jelly doughnut for...
a 54kg woman cheats on her diet and eats a 615 calorie(615 kcal) jelly doughnut for breakfast. a) how many joules of energy are the equivalent of one jelly doughnut? b) how many stairs must the woman climb to perform an amount of mechanical work equivalent to the food energy in one jelly doughnut? assume the height of a single stair is 15cm. c) if the human body is only 20% efficient in converting chemical energy to mechanical energy, how...
A 63-kg woman cheats on her diet and eats a 440-Calorie (440 kcal) jelly doughnut for...
A 63-kg woman cheats on her diet and eats a 440-Calorie (440 kcal) jelly doughnut for breakfast. (a) How many joules of energy are the equivalent of one jelly doughnut? (b) How many stairs must the woman climb to perform an amount of mechanical work equivalent to the food energy in one jelly doughnut? Assume the height of a single stair is 15 cm stairs (c) If the human body is only 28% efficient in converting chemical energy to mechanical...
A 52-kg woman eats a 640 Calorie (640 kcal) jelly doughnut for breakfast. (a) How many...
A 52-kg woman eats a 640 Calorie (640 kcal) jelly doughnut for breakfast. (a) How many joules of energy are the equivalent of one jelly doughnut? _________ J (b) How many steps must the woman climb on a very tall stairway to change the gravitational potential energy of the woman-Earth system by a value equivalent to the food energy in one jelly doughnut? Assume the height of a single stair is 15 cm. _________ stairs (c) If the human body...
A 148 kg student eats a 200 Calorie doughnut. To “burn it off”, he decides to...
A 148 kg student eats a 200 Calorie doughnut. To “burn it off”, he decides to climb the steps of a tall building. (1 food Calorie = 103 Calories.) How high would he have to climb to expend an equivalent amount of work? The accelera- tion of gravity is 9.8 m/s2 . Answer in units of m.
I need help figuring out what concepts to apply to this question: Sara, who weighs 66.0...
I need help figuring out what concepts to apply to this question: Sara, who weighs 66.0 kg, enjoys a 538-Calorie (538 kcal) breakfast of pancakes loaded with fruits, cream, and syrup. She wishes to maintain her weight, so she decides to work out before going to her fitness group's weekly meeting. If the height of a single stair is 12.0 cm, and her body is only 33% efficient in converting chemical energy to mechanical energy, determine the number of stairs...
2. Running up the stairs (5 pts). Time how long it takes for you (or a...
2. Running up the stairs (5 pts). Time how long it takes for you (or a friend) to run as fast as possible up a staircase. Measure the height of one step and count the steps to find how high you climbed. a) How much mechanical energy did you produce to climb the stairs? b) What was the average mechanical power produced during your climb? c) Estimate the muscle mass in your upper legs (quadriceps, hamstrings, and buttocks). (Recall that...
Thermal question A 60-kg hiker plans to climb Mt Kosciuszko (2228 m) starting from Thredbo (1365m). Assume that she is 25% efficient at converting chemical energy from food into mechanical work,...
Thermal question
A 60-kg hiker plans to climb Mt Kosciuszko (2228 m) starting from Thredbo (1365m). Assume that she is 25% efficient at converting chemical energy from food into mechanical work, and that essentially all the work goes into the vertical climb. (a) (3 marks) With reference to the data above, how many servings of Nutrigrain should she eat to provide enough energy for the climb? (b) (6 marks) Climbing a mountain warms you up, and makes you sweat one...
Tonya is 5' 3" tall, weighs 151 pounds, and is 38 years old. Her waist circumference is 37". Her life is busy but sedent...
Tonya is 5' 3" tall, weighs 151 pounds, and is 38 years old. Her waist circumference is 37". Her life is busy but sedentary. She simply does not have the time or energy to stay with an exercise program after working all day as a receptionists and caring for her two socially active children. She would like to lose about 20 pounds but knows dieting doesn’t work for her—all the diets she has tried in the past have left her...
1. What is the difference between fat-soluble and water-soluble vitamins in deficiency and toxicity levels? How...
1. What is the difference between fat-soluble and water-soluble
vitamins in deficiency and toxicity levels? How do deficiencies and
toxicities occur for each
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1. What is the
difference between fat-soluble and water-soluble vitamins in
deficiency and toxicity levels? How do deficiencies and toxicities
occur for each?
2. Tonya is 5' 3"
tall, weighs 151 pounds, and is 38 years old. Her waist
circumference is 37". Her life is busy but sedentary. She simply
does not have...
A 63-kg woman cheats on her diet and eats a 440-Calorie (440 kcal) jelly doughnut for breakfast. (a) How many joules of energy are the equivalent of one jelly doughnut? (b) How many stairs must the woman climb to perform an amount of mechanical work equivalent to the food energy in one jelly doughnut? Assume the height of a single stair is 15 cm stairs (c) If the human body is only 28% efficient in converting chemical energy to mechanical...
Thermal question
A 60-kg hiker plans to climb Mt Kosciuszko (2228 m) starting from Thredbo (1365m). Assume that she is 25% efficient at converting chemical energy from food into mechanical work, and that essentially all the work goes into the vertical climb. (a) (3 marks) With reference to the data above, how many servings of Nutrigrain should she eat to provide enough energy for the climb? (b) (6 marks) Climbing a mountain warms you up, and makes you sweat one...
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