A fast food meal has 5660 kJ of energy. A person uses energy at a rate...
A fast food meal has 5660 kJ of energy. A person uses energy at a rate of 380 W while walking. The efficiency of the human body is 25%. If the person is walking up hill, how much of the energy is converted into gravitational potential energy and how much is converted into heat?
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A fast food meal has 5660 kJ of energy. A person uses energy at
a rate...
For how long would a 68 kg person have to swim at a fast crawl to...
For how long would a 68 kg person have to swim at a fast crawl to use all the energy available in a typical fast food meal of burger, fries, and a drink? Assume that methabolic power of a 68 kg individual swimming at a fast crawl is 800 W and that fast food meal energy content is 5660 kJ. Express your answer using two significant figures.
A. Food Energy. Energy is stored in food as the potential energy of the electrical bonds...
A. Food Energy. Energy is stored in food as the potential energy of the electrical bonds in molecules. Your body converts food energy to mechanical energy and heat. Food energy is expressed in “calories”, which are actually kilocalories (kcal, with 1 kcal= 4.185 kJ) How many joules are in a 130-kcal serving of breakfast cereal? B. A glass of 1 percent milk contains 130 kcal. How many glasses would a 70-kg person have to drink to get the energy needed...
Additional info: Meal = 1720 Kilocalories Mass of myself = 50 kg The Joule () is...
Additional info:
Meal = 1720 Kilocalories
Mass of myself = 50 kg
The Joule () is the SI unit of energy. (J = kg:m? S2 A calorie is another unit of energy. The definition of a calorie is the amount of heat (energy) necessary to raise the temperature of Ig of water by 1° Celsius. Ig of water occupies 1 milliliter (ml) = 1 cubic centimeter (cm) of volume. lkcal=4186J Energy comes in many forms and energy may be converted...
The human body converts internal chemical energy into work and heat at rates of 60 to...
The human body converts internal chemical energy into work and heat at rates of 60 to 125 W (called the basal metabolic rate). This energy comes from food and is usually measured in kilocalories [1 kcal = 4.186 kJ]. (Note that the nutritional `Calorie' listed on packaged food actually equals 1 kilocalorie). How many kilocalories of food energy does a person with a metoblic rate of 109.0 W require per day? (Assume 100 percent efficiency.)
38. BIO The rate at which a resting person converts food energy is called one's basal...
38. BIO The rate at which a resting person converts food energy is called one's basal metabolic rate (BMR). Assume that the resulting internal energy leaves a person's body by radiation and convection of dry air. When you jog, most of the food energy you burn above your BMR becomes internal energy that would raise your body temperature if it were not eliminated. Assume that evaporation of perspiration is the mechanism for eliminating this energy. Suppose a person is jogging...
1. Let’s say that an average person consumes about 2000 calories per day over their entire...
1. Let’s say that an average person consumes about 2000 calories per day over their entire lifetime. A calorie (Cal) is a unit of energy and one Cal equals 4186 ? (Joules). For someone who lives to a ripe age of 100 years, how much energy, in J will they require? What is their average power output in ?/? = ????? (abbreviated ?)? b) Given the total energy a person requires that you calculated above, use Einstein’s equation to determine...
I Review Constants Part A An average sleeping person metabolizes at a rate of about 80.0...
I Review Constants Part A An average sleeping person metabolizes at a rate of about 80.0 energy goes into bodily tunctions, such as cell repair, pumping W by digesting food or burning fat. Typically, 20.0 % of this blood, and other uses of mechanical energy, while the rest goes to heat. Most people get rid of all of this excess heat by transferring it (by conduction and the flow of blood) to the surface of the body, where it is...
A 100-kg person is working out in the gym dissipating 100 W of energy. How long...
A 100-kg person is working out in the gym dissipating 100 W of energy. How long would it take for their body temperature to rise by 1oC, ignoring all other forms of heat transfer in and out of their body? The specific heat of human tissue is 3.75 kJ kg-1 K-1. What is unreasonable about this calculation?
A person decides to loose weight by eating only cold food. A 1 kg piece of...
A person decides to loose weight by eating only cold food. A 1 kg piece of apple pie yields 1500 kJ of energy when eaten. It its specific heat is 1.7 kJ/kg °C, how much less energy is its energy component at 25°C than at 100°C? Please show work.
please solve 11,12,13,14.thanks Out of 120 kJ of thermal energy at 377°C, kJ of it is...
please solve 11,12,13,14.thanks
Out of 120 kJ of thermal energy at 377°C, kJ of it is not available to create useful work, if the environment is at 27°C. 64.62 44.22 55.38 D Question 12 10 pts A heat engine operates between two temperature limits of 1300 K and 300 K (environment temperature). It receives 1.08 MJ of heat while producing 700 kJ of useful work. Determine the exergy destroyed in this process. 370 kJ 830 kJ 130 kJ How much...
For how long would a 68 kg person have to swim at a fast crawl to use all the energy available in a typical fast food meal of burger, fries, and a drink? Assume that methabolic power of a 68 kg individual swimming at a fast crawl is 800 W and that fast food meal energy content is 5660 kJ. Express your answer using two significant figures.
Additional info:
Meal = 1720 Kilocalories
Mass of myself = 50 kg
The Joule () is the SI unit of energy. (J = kg:m? S2 A calorie is another unit of energy. The definition of a calorie is the amount of heat (energy) necessary to raise the temperature of Ig of water by 1° Celsius. Ig of water occupies 1 milliliter (ml) = 1 cubic centimeter (cm) of volume. lkcal=4186J Energy comes in many forms and energy may be converted...
38. BIO The rate at which a resting person converts food energy is called one's basal metabolic rate (BMR). Assume that the resulting internal energy leaves a person's body by radiation and convection of dry air. When you jog, most of the food energy you burn above your BMR becomes internal energy that would raise your body temperature if it were not eliminated. Assume that evaporation of perspiration is the mechanism for eliminating this energy. Suppose a person is jogging...
I Review Constants Part A An average sleeping person metabolizes at a rate of about 80.0 energy goes into bodily tunctions, such as cell repair, pumping W by digesting food or burning fat. Typically, 20.0 % of this blood, and other uses of mechanical energy, while the rest goes to heat. Most people get rid of all of this excess heat by transferring it (by conduction and the flow of blood) to the surface of the body, where it is...
please solve 11,12,13,14.thanks
Out of 120 kJ of thermal energy at 377°C, kJ of it is not available to create useful work, if the environment is at 27°C. 64.62 44.22 55.38 D Question 12 10 pts A heat engine operates between two temperature limits of 1300 K and 300 K (environment temperature). It receives 1.08 MJ of heat while producing 700 kJ of useful work. Determine the exergy destroyed in this process. 370 kJ 830 kJ 130 kJ How much...
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