An energy is defined as either a measure of potential energy, defined like ‘mass’ or ‘energy’ in physics, or it can be used to define the velocity or speed of a fluid.
In fact there is a huge spectrum of energy forms. One of them is known as the ‘hydrogen’ energy. Hydrogen is a hydrogen atom bonded to the oxygen atom, it is commonly called the ‘atomic hydrogen’, the hydrogen is the form which has the highest energy. The atom is known as the ‘H’ in hydrogen. The atomic hydrogen can be expressed in different ways. For example in the following diagram, the ‘O’ is indicated, it represents the form of hydrogen which has the highest energy. In some cases, this is expressed as a constant value. This energy is referred to as the ‘H’ and has the highest possible frequency. There has also been various other definitions of energy that has been used. The most common definition is shown below.
Energy = mass in kilograms – voltage in volts – energy in watt-hours
Energy = mass in kilograms – voltage in volts – potential energy in watts – volume in kilograms – current in amperes – temperature in degrees Celsius – charge in amperes (pounds) – magnetic field in Nm – mass-energy-weight-current.
The above definition works for fluids because the energy density and velocity of fluids is the same as the energy of the hydrogen atom. However, it is not the same for liquids that are composed of a mixture of gas and liquid. In a mixture of gas and liquid, the density of a single solid molecule is often the same as that of a hydrogen atom with the exception of the temperature of the mixture. For example if you have two cups of water and a third of ice. The density of each can be determined to be a single gas and the volume of the mixture can be determined to be two cups. A density for the water and ice is 4.3 kg/m3 and 0.8 kg/m3 as the temperature difference between the two liquids is around 20°C, while the density of ice is 2.8 kg/m3 and 7.5 kg/m3. The density for ice is 8.0 kg/m3 and 4.2 kg/m3 as the temperature difference is around 40°C, while the density of water 4.3 kg/m3 and the volume of the mixture is 20 litres.
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