Technology can be used constantly if you own a refrigerator or freezer. It also takes technology to keep the sink going.
National Grid, Gadgets
an example of a mealy machine is a door
how is petrol used in our everday life
It usually isn't. Scientific notation is used for very large and very small numbers, that are not normally used in your daily life. Unless your "daily life" involves work in science or engineering.
I use the Golden Ratio in my daily life to design websites.
Daily doing good deeds and being a better person:)
These nuts
You pet them
Sunblock.
In dentistry .
in alternators
They are used in airplanes and in sailboats.