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By Anthropogenic activity. (not me)
By leaving on lights. (me)
By leaving on the TV whilst you are on the PC or not in the room. (me)
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∙ 12y ago
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What does it mean that a form of energy might take more energy to harness than it provides?
It means that we would get less energy out of that source than we put into it, so the net result is wasted energy.
During an energy transfer what happens to the total amount of energy?
Energy can not be destroyed, so the total amount of energy before a change is equal to the amount of energy after the change. However, some energy is changed into a useful form, but some may be wasted and not used. For example, a light bulb, changes electrical energy into light energy, but some of the energy is changed to heat and some to sound, these are not useful and are wasted, but are changed nonetheless. So a transformation from mechanical energy to heat will have the same total energy at the start as at the finish, but unless it is 100% efficient some of the original energy will be 'lost'
Why is w out is always less than w in?
That is becasue no machine is 100% efficient - SOME energy usually gets wasted.
Does friction cause more energy to be wasted if the object is heavier Why?
Friction between two objects = C X N. where C is the coeffiecient of friction for the objects in question, and N is the 'Normal' force. The normal force is the force equal and opposite to the object's weight. Therefore, if you increase the object's weight, the friction force increases, and the amount of energy wasted increases.
When does an irreversible process occurs?
An irreversible process occurs whenever there is an increase in entropy. Entropy can be thought of as a measure of "wasted" energy, that is, energy that cannot be converted to useful work. Therefore any process which results in an increase in entropy wastes some portion of energy that cannot be recovered, and so the process is irreversible.
Is it always easy to collect wasted energy and use it?
Once the energy is wasted, you can't convert it back to useful energy.Once the energy is wasted, you can't convert it back to useful energy.Once the energy is wasted, you can't convert it back to useful energy.Once the energy is wasted, you can't convert it back to useful energy.
What is heated by the thermal energy wasted by a food mixer?
kinetic energy is wasted
Wasted energy produced by motor bike?
Noise and heat is wasted energy from motorcycles.
What is the usefull and wasted energy in a hair dryer?
Sound energy from the hair dryer is wasted.
Why is heat the most common form of wasted energy?
Heat energy is the most wasted form of energy.
What happens to wasted energy from a boiler?
the energy wasted by the system(boiler) is gained by the surrounding atmosphere
Most energy transformations produce what form of energy?
In most energy transformations, part of the energy is wasted. Much of the wasted energy is usually converted to heat.
What is the wasted energy from a rocket?
The wasted energy in a car is electrical energy
How long does energy efficient light bulbs STAY ON?
As long as they receive energy. The energy-efficiency refers to the fact that less energy is wasted as heat.As long as they receive energy. The energy-efficiency refers to the fact that less energy is wasted as heat.As long as they receive energy. The energy-efficiency refers to the fact that less energy is wasted as heat.As long as they receive energy. The energy-efficiency refers to the fact that less energy is wasted as heat.
Why does a non energy saving light bulb give off more heat than an energy saving light bulb?
Any of the wasted energy that is not converted to light will be converted to heat.Any of the wasted energy that is not converted to light will be converted to heat.Any of the wasted energy that is not converted to light will be converted to heat.Any of the wasted energy that is not converted to light will be converted to heat.
What energy is wasted well riding a bike?
Every time you have to brake, the speed you lose is wasted energy.
Energy that is not usefully transformed by the fan heater is wasted as what energy?
Sound Energy
