Due to these limitations and needs, they eat a lot of food high in specific energy content, such as chocolate high in carbohydrates and fats , butter, and nuts, as well as dehydrated meats. It is believed that one of the reasons why the five explorers of the Terra Nova Expedition to the South Pole, headed by Robert Falcon Scott, did not survive the return journey was the inaccurate estimate of the total daily energy needs per person.
They also did not use enough foods high in specific energy. In particular, some researchers believe that the men only brought enough food to afford 4, calories a day, while the current estimates call for 6, calories or more.
They could not carry more food with them because they chose the lower energy density foods like proteins. While they did eat butter, researchers now believe that they needed to eat more fats and carbohydrates, but did not need as much protein as they actually ate. Fat is what some animals use to survive food and water shortages. Water is a byproduct of metabolism, this is why storing fat also gives animals access to extra water.
Because fat renders more energy per gram than do proteins and carbohydrates, it is a preferred fuel to store internally. Camels, for example, store fat in their hump so that they have access to energy and water during long trips in the desert.
They have about 15—20 kilograms of fat. Whales, seals, polar bears, and many other creatures also store excess food as fat. Some also believe that women have a higher percentage of body fat because they were evolutionally restricted in hunting and gathering when caring for the children, so the additional fat sustained them at those times. If the men that cared for them and the children did not catch enough food, it is possible that they ate this food themselves, and the women did not get any.
Hence the need for extra fat reserves. Now most people do not have this need, but the body still accumulates fat when people eat more than they need — this is one of the possible causes for the obesity epidemic in most of the developed world where food is abundant, cheap, and easily accessible. Most animals derive energy from organic components, namely proteins, carbohydrates, and fats. Microbes, on the other hand, extract energy from inorganic components such as ammonia, hydrogen, sulfides, and iron monoxide.
Plants derive energy from solar radiation and convert it during the process of photosynthesis to chemical energy that their cells can use. ATP is used during photosynthesis in plants and microbial metabolism in a similar way as it is used by animals. This article was written by Kateryna Yuri. Specific energy, Heat of Combustion per Volume Converter. Coefficient of Thermal Expansion Converter. Heat Transfer Coefficient Converter. Do you have difficulty translating a measurement unit into another language?
Help is available! Post your question in TCTerms and you will get an answer from experienced technical translators in minutes. Calculations for the Specific Energy, Heat of Combustion per Mass Converter converter are made using the math from unitconversion. Specific energy per mass is defined as the energy per unit mass. The concept of specific energy applies to a particular e. The specific energy of the fuel is also called the energy content of the fuel. Power-Specific Fuel Consumption PSFC is a fuel efficiency measure of an engine defined as the rate of fuel consumption divided by the power produced.
It allows comparing the fuel efficiency of different engines. In SI units, the power-specific fuel consumption is expressed in kilograms per kilowatt-hour. This online unit converter allows quick and accurate conversion between many units of measure, from one system to another.
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We work hard to ensure that the results presented by TranslatorsCafe. Convert energy of kilojoule kJ and gram-force meters g f m units in reverse from gram-force meters into kilojoules. With this energy units pair converter , a difference between two energy units are calculated to work out their corresponding equivalent values.
First unit: kilojoule kJ is used for measuring energy. Gigajoule Gigajoule is a unit of energy equal to 1. Gigawatt hour Gigawatt hour is a unit of energy equal to Megawatt hours, sysmbol "GWh". Hartree The hartree is the atomic unit of energy, symbol E h or Ha.
Horsepower hour Horsepower-hour hph is an outdated unit of energy, not used in the SI system of units. Inch ounce Inch ounce is a unit of energy equal to about 0. Inch pound Inch pound is a unit of energy equal to about 0. Kilojoule Kilojoule is a unit of energy equal to joules, symbol "kJ". Kilowatt hour The kilowatt-hour symbolized kWh is a unit of energy equivalent to one kilowatt 1 kW of power expended for one hour 1 h of time. Liter atmosphere Liter atmosphere is a unit of energy, symbole "l-atm", equal to Megaelectronvolt Megaelectronvolt is a unit or energy equal 1 electronvolts, symbol "MeV".
Megajoule Megajoule is a unit of energy equal to 1 joules, symbol "MJ". Megawatthour Megawatthours is unit of energy equal to 1 kilowatt hours, symbol "MWh". Newton meter A newton metre is a unit of torque also called "moment" in the SI system.
Petajoule Petajoule is a unit of energy equal to 1. Q unit Q units is a measure of energy system. Quad A quad is a unit of energy equal to 10 15 a short-scale quadrillion BTU,or 1. Teraelectronvolt Teraelectronvolt is a unit of energy equal to 10 12 electronvolts, symbol "TeV".
Terajoule Terajoule is a unit of energy equal to 1. Terawatthour Terawatthours is a unit of energy equal to Gigawatt hours, symbol "TWh". Thermie Thermie th is a metric unit of heat energy, part of the meter-tonne-second system sometimes used by European engineers. Exchange reading in kiloJoules unit kJ into gram force centimeters unit g f cm as in an equivalent measurement result two different units but the same identical physical total value, which is also equal to their proportional parts when divided or multiplied.
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