You can add ethanol to gasoline to make the octane higher.
No, but only if it is a small amount. It will mix with the gasoline and burn off. The engine may give off a black exhaust until it is gone but a small amount of diesel should not damage the engine.For more information see the answer to the Related Question shown below.
I cannot give you a specific answer, because it varies depending on the engine.
A hybrid works by having both, a gasoline engine and electric motors and batteries. The car can be initially driven using a large electric motor powered by the batteries. As more power is needed and when the batteries become discharged, the gasoline engine automatically starts up. Through an automatic gearbox and complex linkage, the engine can now also power the wheels with the motor assisting as well. Under overrun the motor can be used in reverse, powered by the engine, it can charge the batteries. All of the control, dealing with which powers what and how the charge is managed , is all handled by an on board computer. A display on the dashboard, can also tell you where the power is being used and how efficiently you are driving. The car always starts off under electric power. The engine only cuts in when needed. In this way, best use is made of the gasoline engine, which only run efficiently under load and warm. A smaller engine can be used, with the batteries giving the extra boost. The idea is to smooth out the inefficiencies of an internal combustion engine and yet give the range and convenience of fuelling with gas.
Possibly one of the engines that give it power.
No. If your car runs well on a lower octane gasoline (i.e. no engine pinging or knocking), then putting a higher octane gas in your tank is just wasting money...
Octane rating is a measure of how resistant the fuel is to causing 'knocking' or pre-detonation in petrol(gasoline) engines. It is measured relative to a hydrocarbon which is rated at 100, and determined by testing in a test engine. There are two methods of testing though, which give results called RON or MON. In Europe RON is quoted, and regular petrol is about 92, though usually pumps give 95 RON fuel. In the US a mean of RON and MON is used and for the same fuel the figure is about 5 points lower, so 90 would be the same as 95 in Europe.
There is no problem in changing the size of the engine rated horsepower, as long as it is an increase. The tricky part is to assure that the shaft size and length match. The engine mounting system must be the same, and obviously everything must connect and fit like it did for the original engine. A larger engine should give you additional power, but will likely also consume more gasoline.
Same as a regular car engine but to give it the extra power it has some more cylinders
A helicopter with a jet engine. The engine is adapted to give power to a transmission, rather than thrust.
The amount of thrust depends on the power of the engine
You have to put coal in it and give it redstone power (e.g. lever, redstone torch)
James Watt