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Why does a saw become warm when it is used to cut a log of wood. State the energy transformation taking place?
Mechanical energy is wasted due to friction. The wasted energy is converted into heat.
What is the energy transformation in walking?
there is not transformation of energy it is kinetic energy
What makes an energy transformation inefficient?
Energy can get wasted through several means. One of the most obvious ones is friction. However, entropy also increases - and energy therefore gets wasted - in other ways; for example, when there is a heat transfer between two objects that are at different temperatures; when eddies are produced in a water current (or electrical current); when electrical current gets converted to heat in a resistance; and through several other means. Quite often, the intention of an energy transformation is to produce one type of energy (for example, light in a light-bulb); but additional (undesired) types of energy are produces as well, quite often heat.
What are the way in which energy gets wasted or used in excess?
by leaving the light on.
Is there any form of energy that is not reversible by itself?
I am not entirely sure what you mean by "reversible by itself".An energy transformation is usually NOT entirely reversible. Some energy is wasted in the transformation, and (even though the energy is definitely still somewhere), you may need ADDITIONAL energy to transform it back.
Why does a saw become warm when it is used to cut a log of wood. State the energy transformation taking place?
Mechanical energy is wasted due to friction. The wasted energy is converted into heat.
When you turn on a radio what type of energy transformation takes place?
electrical/chemical to sounds(useful energy) and heat(wasted energy)
What is the energy transformation in walking?
there is not transformation of energy it is kinetic energy
What are the ways in which energy gets wasted or used in excess?
by leaving the light on.
What are the way in which energy gets wasted or used in excess?
by leaving the light on.
What makes an energy transformation inefficient?
Energy can get wasted through several means. One of the most obvious ones is friction. However, entropy also increases - and energy therefore gets wasted - in other ways; for example, when there is a heat transfer between two objects that are at different temperatures; when eddies are produced in a water current (or electrical current); when electrical current gets converted to heat in a resistance; and through several other means. Quite often, the intention of an energy transformation is to produce one type of energy (for example, light in a light-bulb); but additional (undesired) types of energy are produces as well, quite often heat.
Why is the final amount of usable energy in an energy transformation less than the original amount?
The idea here is that part of the original energy is wasted - converted to an unusable type of energy.
Is there any form of energy that is not reversible by itself?
I am not entirely sure what you mean by "reversible by itself".An energy transformation is usually NOT entirely reversible. Some energy is wasted in the transformation, and (even though the energy is definitely still somewhere), you may need ADDITIONAL energy to transform it back.
What type of energy is always produced when energy changes form?
Usually some energy gets wasted, and converted into heat.
What is the transformation of energy of flashlight?
The chemical energy stored in batteries gets transformed sets into electrical energy through the wires. This then gets transformed into light energy that you see.
Is lots of energy wasted on transforming it to electricity?
That depends what you mean with "it". The original energy, which is meant to be converted to electricity, can be in different forms - the amount of waste will depend on the specific transformation.
Why Appliances only transfer part of the energy usefully?
It is inevitable that some energy is almost always wasted. For example, if there are moving parts, it is inevitable that energy is wasted through friction; or if there is a temperature difference, it is inevitable that heat gets transferred, etc.
