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Noise and heat is wasted energy from motorcycles.
If there is energy in an electric motor (electricity is being supplied to it). it will be turing/running. When there is no energy in it (being supplied to it) it will stop.
The electrical energy supplied to an electric motor
Yes. The heat and light energy in a torch are separate. From the total energy input to the torch (chemical energy from batteries), Some is useful (the light energy) and some is wasted. (heat/thermal energy) The more efficient an appliance is ,the less energy out of the input energy is wasted. For example, an appliance may be 70% efficient. If it is supplied with 100J (joules) of energy, 70J will be useful and 30J will be wasted. Along with light energy, heat energy is also produced by a torch and is wasted. Heat energy is the most common form of wasted energy in appliances. Other appliances will waste energy in the form of heat, though it may not always be obvious.
around 50% of water supplied to Nagpur city is wasted.
It depends on the efficiency of the appliance. If an electric motor has an efficiency of 0.7, then for every 1000 megajoules, 30 megajoules will be wasted as useless heat or sound or other useless energy form.
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.
kinetic energy is wasted
An electric motor need to be supplied electricity to operate. It can be made to generate electricity if turned by an outside force when set up correctly.
when electrical energy is supplied to the motor of an electric fan, some of the electrical energy is transferred to the fan blade as kinetic energy. The energy is also transformed from electrical to kinetic.
Sound energy from the hair dryer is wasted.
Heat energy is the most wasted form of energy.