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steam engine? Carnot cycle heat engine?
Fossil fuel in itself is simply an example of potential energy, which can be changed to mechanical energy by burning, thus changing from potential energy to heat energy and then to mechanical energy.
It changes from one form into another routinely. Electrical energy changes into mechanical energy (and heat) in an electric motor. Light energy changes into electrical energy (and heat) in a solar cell. Chemical energy (in coal for example) is changed into heat energy (when the coal is burned) which can raise steam under pressure to drive a turbine, converting most of the the heat energy to mechanical energy, which then drives a generator to convert the mechanical energy to electrical energy. Energy is neither created nor destroyed, but changes from one form to another.
Mechanical energy can create thermal energy by doing work on a substance, such as compressing a gas, or by friction as in brakes on a vehicle, which get very hot under braking.
As far as I know, there is no such thing as "mechanical heat energy"; there is mechanical energy, and there is heat energy.
When a muscle contracts, it performs work. It does this byA)converting chemical energy to mechanical energy.B)converting mechanical energy into heat energy.C)converting mass into energy.D)creating energy.
Combustion (fire or burning) is arguably the most common example of converting chemical energy into thermal energy. But consider that all animals create a bit of thermal energy converting chemical energy into heat (as well as some mechanical energy) when they move.
steam engine? Carnot cycle heat engine?
Smoke is an example of mechanical energy and heat energy. This is because the internal motion of atoms is called heat energy and mechanical energy is energy associated with motion. Smoke contains atoms moving which is both an example of heat and mechanical energy.
Combustion (fire or burning) is arguably the most common example of converting chemical energy into thermal energy. But consider that all animals create a bit of thermal energy converting chemical energy into heat (as well as some mechanical energy) when they move.
By burning the coal. The stored chemical eneregy is converted to heat energy. That may be used to create steam. Expanding steam pushes a piston or turbine, converting the heat energy to mechanical energy.
Interesting this should even be asked because NOT converting mechanical energy to heat seems to be the holy grail of engineering. However, to answer the question, in a word; FRICTION Your car brakes are a perfect example. When you apply the brakes you are using the FRICTION between two materials (brake pads and rotor or drum) to reduce the car's speed by converting it's momentum, i.e. mechanical energy, into lots of heat. After just a few stops the rotors on your car will quickly and efficiently burn the $#!^ out of your fingers. I know this.
Fossil fuel in itself is simply an example of potential energy, which can be changed to mechanical energy by burning, thus changing from potential energy to heat energy and then to mechanical energy.
It changes from one form into another routinely. Electrical energy changes into mechanical energy (and heat) in an electric motor. Light energy changes into electrical energy (and heat) in a solar cell. Chemical energy (in coal for example) is changed into heat energy (when the coal is burned) which can raise steam under pressure to drive a turbine, converting most of the the heat energy to mechanical energy, which then drives a generator to convert the mechanical energy to electrical energy. Energy is neither created nor destroyed, but changes from one form to another.
Absolutely a simple example is the engine.
Mechanical energy can create thermal energy by doing work on a substance, such as compressing a gas, or by friction as in brakes on a vehicle, which get very hot under braking.
As far as I know, there is no such thing as "mechanical heat energy"; there is mechanical energy, and there is heat energy.