Topic: How Do I Calculate Energy Density in Foods
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Answers to Common Questions
How to Calculate Energy Density
Energy density is the quantity of energy stored in a region per unit volume. It is a useful measurement when dealing with electric and magnetic fields. The idea is also used in nutritional research, though the calculation in this discipline... Read More »
Source: http://www.ehow.com/how_6594172_calculate-energy-density.html?ref...
How to Calculate the Energy Density of Butane
All fuels have unique energy densities, which can be increased by refining processes that remove impurities. The energy density of a fuel refers to how much energy, in Joules (J), is contained in a specific volume, such as a liter (L), of t... Read More »
Source: http://www.ehow.com/how_6317520_calculate-energy-density-butane.h...
How Do I Calculate Power & Energy Density?
Two quantities that arise frequently in science include power and energy density. Power comprises the amount of energy a device uses or generates every second. The scientific unit for power is the watt and is equal to production or use of o... Read More »
Source: http://www.ehow.com/how_6832621_do-power-_amp_amp_-energy-density...
Featured Content:
How Do I Calculate Energy Density in Foods
According to the World Health Organization there are more than 1 billion overweight adults in the world. Therefore, there is interest in finding a dietary regimen to use for weight-loss programs, and energy… More »
Difficulty:
Moderately Easy
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More Common Questions
Answers to Other Common Questions
The caloric content of food is measured by burning the food in a bomb calorimeter. http://en.wikipedia.org/wiki/Food_calorie
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Source: http://wiki.answers.com/Q/What+is+food+energy+calculated+in
H = Δt•m•4.2 then divide Δt•m•4.2 by mass of food (in g) where H = heat absorbed (in J), Δt = change in temperature (in °C), m = mass of the water heated (in g) •=Multiply
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Source: http://wiki.answers.com/Q/What_is_the_formula_used_to_calculate_e...
You need energy to heat the food, say, from 20 degrees to 100 degrees (the boiling point of water, under normal pressure). In some cases you can assume the food is mainly water, so use the heat capacity of water for your calculations. Once ...
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Source: http://wiki.answers.com/Q/How_can_you_calculate_how_much_energy_i...
Only 10% of the energy in one level gets to the next. The other 90% is used on movement. If you can figure out how much energy is in one trophic level, you can get how much energy gets to the next level by multiplying it by 0.1
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Source: http://wiki.answers.com/Q/How_do_you_calculate_the_amount_of_ener...
"Calories" is a way of indicating food energy. Generally speaking, 1 gram of carbohydrate = 4 calories; 1 gram of protein = 4 calories; 1 gram of fat = 9 calories. People need different amounts of calories to maintain weight based on age an...
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Source: http://answers.yahoo.com/question/index?qid=20080211224109AAMTy4l
The 0.7 is in units of the so-called "critical density", rho_c. This is rho_c=3 H_0^{2} /(8 pi G), where G is the Newton's constant, and H_{0} is the current Hubble constant. Numerically, rho_{c} = 1.88 h^{2} *10^{-29} g/(cm^{3}, where h^{2...
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Source: http://answers.yahoo.com/question/index?qid=20100813003201AAxEP2o
