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there are a lot of examples.. there are the wheels or tires.. the use of fuel.. brake fluids... tampered glass as windshields or the windows... the astronaut's suit.. rocket fuel.. etc...
Not necessarily. An excess of air causes the fuel/air mixture to become lean, and it doesn't have a positive impact on efficiency.
The Chevrolet Lumina fuel pump is powered by the electrical system. The fuel pump has a ground wire and a positive wire. The positive wire goes to the fuel pump relay switch.
Yes, of course. It takes raw materials and engergy to produce a hydrogen fuel cell. It then takes raw materials and energy to produce the hydrogen fuel. However, the result of the hydrogen fuel cell combustion is water - this is a significant improvement over regular internal combustion engines which produce all kinds of exhaust fumes.Assuming hydrogren fuel cells become wide spread then society will change in many ways from new jobs and new fuel refineries/distribution to new language/slang for the HFCs etc...
You can test the fuel pump by touching the positive wire on the positive post of the battery. You will need to ground the ground wire.
NO.
Basically the less fuel you use the less fuel you have to dig, pump or blast out of the ground.
Heat and fuel
To spend less money on gas and have less of an impact on the environment -- assuming fuel usage is directly related to environmental impact.
The degree of change in the demand for one product as a response to a change in the price of a different product. For example, an increase in the price of petroleum is likely to have a negative impact on the demand for gas-guzzling vehicles and a positive impact on the demand for fuel-efficient vehicles. The cross elasticity for substitutes is generally positive, in that a price increase for one product will result in an increase in demand for a substitute.
what are positive effects of bio fuel
The planes that crashed into the towers had full fuel tanks when at the time of impact.