A lawnmower typically uses mechanical energy to cut grass. The engine inside the lawnmower converts fuel into mechanical energy used to rotate the blades and trim the grass.
electricity
A lawnmower converts potential energy into work
You don't need a lawnmower. There is no law that requires you to need a lawnmower, but, if you have a lawn and want to keep it tidy you would be advised to use a lawnmower as a scythe requires much skill and a lot of energy.
The energy that is not useful is called waste energy. It is the energy that is not harnessed or converted into a form that can be utilized for work or other useful purposes.
Useful: Energy Light Sound Non-Useful: Electricity C02
Waste energy
Usually, the amount of useful energy after a conversion will be less than the original energy. In no case can it be more.Usually, the amount of useful energy after a conversion will be less than the original energy. In no case can it be more.Usually, the amount of useful energy after a conversion will be less than the original energy. In no case can it be more.Usually, the amount of useful energy after a conversion will be less than the original energy. In no case can it be more.
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.
Energy as such can NOT be destroyed - however, you can convert useful energy into unusable energy.Energy as such can NOT be destroyed - however, you can convert useful energy into unusable energy.Energy as such can NOT be destroyed - however, you can convert useful energy into unusable energy.Energy as such can NOT be destroyed - however, you can convert useful energy into unusable energy.
Currently, gold is not useful in any form of energy production.
Waste energy.