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How efficient is a normal car engine what percentage of energy is converted into useful energy?
The answer is 20-25% so about ¾ of the chemical energy is wasted, i.e. not turned into kinetic energy of the car.
Engine efficiency is limited by the maximum temperature and pressure that a normal cylinder block can take. Diesel engines run at higher temperature/pressure and are more efficient but have to be more massively built.
Another form of wasted energy is the water produced by the burning action of the hydrogen in the fuel with oxygen from the air. It comes in the form of steam and the energy of the steam is wasted by being sent out through the exhaust pipe (you can see the water dripping out of the exhaust when the car is cold, because there is time for it to condense in the cold exhaust system).
What else can I help you with?
When a car is driven the chemical energy in gasoline converted into?
When a car is driven, the chemical energy in gasoline is converted into mechanical energy by the engine. The combustion of gasoline in the engine produces heat, which is then converted into kinetic energy that propels the vehicle forward.
Why efficiency of heat engine has no unit?
It is a ratio or percentage. For example, if 1/2 of energy of an engine is wasted, it is 1/2, or 50%, efficient. In ratios, units cancel out.
What is Thermal energy that is converted into mechanical energy?
steam engine
How can you convert nuclear energy into energy that you can use?
First it is converted into heat. This is then usually converted to other types of energy through a steam engine.
What are 20 examples of energy conversion?
Chemical energy in food is converted to mechanical energy when our muscles move. Solar energy is converted to electrical energy in solar panels. Electrical energy is converted to light and heat energy in an incandescent light bulb. Wind energy is converted to electrical energy in wind turbines. Potential energy in a dam is converted to electrical energy in a hydroelectric power plant. Thermal energy in fossil fuels is converted to electrical energy in a power plant. Nuclear energy is converted to electrical energy in nuclear power plants. Mechanical energy in a car engine is converted to kinetic energy to move the car. The kinetic energy of falling water is converted to mechanical energy in a waterwheel. Sound energy is converted to electrical energy in a microphone. Electric energy is converted to sound in a speaker. Kinetic energy in moving air is converted to electrical energy in a wind turbine. Chemical energy in batteries is converted to electrical energy in electronic devices. Gravitational potential energy is converted to kinetic energy when an object falls. The energy in food is converted to heat energy in a stove during cooking. The energy in gasoline is converted to mechanical energy in a car engine. Heat energy in a geothermal reservoir is converted to electrical energy in a geothermal power plant. Mechanical energy in a hydro turbine is converted to electrical energy in a hydroelectric power plant. Chemical energy in gasoline is converted to thermal energy in an engine. Solar energy is converted to thermal energy in a solar water heater.
What kind of energy in car engine?
Chemical energy is being converted to thermal energy which is then converted to mechanical energy and finally to kinetic energy which moves the car. Kinetic energy is then converted to thermal energy in the brakes to stop the car.
When gasoline is burned in a car engine what energy is converted into another energy?
Chemical Energy into Mechanical Energy
What energy transformations occur in a car?
Mechanical
Why is engine running?
Energy getting converted from one form to other.
Describe the energy transformation that occurs as fuel is used by engine of a car?
chemical energy is converted to kinetic energy
What energy transformations happen in a car engine?
In a car engine, the chemical energy stored in the gasoline is converted to thermal energy through combustion. The thermal energy is then converted to mechanical energy as the pistons move and drive the vehicle. Finally, the mechanical energy is transferred to the wheels to propel the car forward.
How is energy from chemical energy released and transferred into thermal energy?
Chemical compounds, like oil or coal, hold potential chemical energy in the powerful molecular bonds with the compound. If such a chemical compound undergoes a chemical reaction (in this case in an internal combustion engine), the potential chemical energy will be released in the form of thermal energy. Of course, no energy transformation is 100% efficient as some of the potential chemical energy is either not converted at all or converted into a different form of energy. Take the example of a fire in one's fire place. Although a large percentage of the potential chemical energy in the wood is converted into thermal energy that we can feel as heat, some of the energy is converted into light, that we can see as the brightness of the fire, and some is converted into sounds, as we can hear in the roaring of the fire.
