yes it does, because the computer will still use a small amount of electricity while on standby mode
of course it does, you don't use the energy to keep it running, hence, you save energy.
Photosynthesis is an example of turning energy into mass. E=mc^2 is how energy is turned into mass.
No, it's potential energy turning into kinetic energy.
A computer uses electrical energy
Turning off unused lights is an example of Energy Conversion. Energy conversion is the process of chaning one form of energy to another.
Leaving any electrical device on consumes power. You get charged for what you use. With no power consumed, no charge.
About 500 dollars a year. No, but you can save energy by turning it off over night.
kinetic energy into electric energy
hydroelecric energy
The mechanical energy of wind pushes on the blades, turning them (still mechanical energy) turning blades turn the generator (still mechanical) The generator changes mechanical energy to electrical energy.
Turning on a lamp
hydroelecric energy