The can collapses and closes in on itself.
the granite will get hot from being heated repeatedly and you will get cold from plunging into cold water. not sure why you you want to do either.
it'll get crushed due to air pressure
Heat energy is transferred from the hot water to the cold.
when hot water and cold water are mixed together then the energy is transfered from hotwater to cold water
The water molecules lose energy and move more slowly. Some of this energy is transferred to the cup and some of the energy is transferred to the air. The temperature of the water will eventually reach equilibrium with the environment.
the particles of the hot water decreased by -20 which means that they where 480 calories transferred out of the hot water and the cold water increased 20 which means that they were 480 calories transferred into the cold water.
absorption
No, cold water is piped into the hot water tank and is heated by electricity or gas, it then flows out to the hot water taps.
they get exited and move faster than cold molecules
it gets coldit gets cold
NO, it is the opposite. remember molecules expand when heated
It would probably steam. Since most of the engine's mechanisms are internal, it probably wouldn't cool it down all that much.