No, heat energy is not always useful. In some situations, like in the case of unwanted heat in electronics causing overheating, heat energy can be detrimental. However, in many cases, heat energy is harnessed for various purposes such as cooking, heating buildings, and generating electricity.
Heat is always produced during energy transformations. This is because not all of the energy input can be converted to useful work, and some of it is lost in the form of heat due to inefficiencies in the conversion process.
The reason the useful output energy is always less than the input energy is due to inefficiencies in the energy conversion process. Some energy is always lost as heat, sound, or other forms of energy during conversion, reducing the amount of energy available for useful work. This decrease in useful output energy is described by the concept of energy conservation and the second law of thermodynamics.
No, not all energy transferred during an energy change is always useful. Some energy may be lost as heat or sound, decreasing the overall efficiency of the energy transformation. This is known as energy wastage, and it occurs in many natural and human-made processes.
False (APEX)
In any energy transformation, some energy is always lost as heat due to inefficiencies in the system, such as friction and resistance. This wasted energy is not able to be converted into useful work and is typically dispersed into the environment.
Energy always turns from useful energy to less useful forms of energy. so in theory the answer is no, but in reality there is always some heat generated in all transformations.
Heat is always produced during energy transformations. This is because not all of the energy input can be converted to useful work, and some of it is lost in the form of heat due to inefficiencies in the conversion process.
The reason the useful output energy is always less than the input energy is due to inefficiencies in the energy conversion process. Some energy is always lost as heat, sound, or other forms of energy during conversion, reducing the amount of energy available for useful work. This decrease in useful output energy is described by the concept of energy conservation and the second law of thermodynamics.
The useful energy that comes out of a light bulb is primarily in the form of light and heat. The electrical energy is converted into light energy that illuminates the surroundings and heat energy that warms up the light bulb and its surroundings.
heat energy
No, not all energy transferred during an energy change is always useful. Some energy may be lost as heat or sound, decreasing the overall efficiency of the energy transformation. This is known as energy wastage, and it occurs in many natural and human-made processes.
That would be "heat", except that sometimes heat can be quite useful.
heat
False (APEX)
When coal is burnt, the energy lost in the form of heat and pollutants such as carbon dioxide and ash is considered as not useful energy. This includes waste heat that is not converted into useful work or electricity.
heat(useful energy) and sound(waste energy)
Heat is thermal energy. Always.