why are vacuum flasks called vacuum flask
Because it has a vacuum.
It is vacuum
A Vacuum is the absence of air. So no, there is no air in a vacuum.
Yes, we are vacuum cleaners of the vacuum cleaners, which are the floor cleaners
There is no pressure in a vacuum, a vacuum is the absence of anything, there is nothing there to push. Air from a pressurized space that becomes open to a vacuum may push you into the vacuum, but the vacuum itself does nothing as it is literally nothing.
When the vehicle is under acceleration it doesn't supply vacuum. The vacuum canister or reservoir holds a vacuum supply to operate vacuum operated accessories until the engine regains vacuum.
There are:Bagless vacuum cleanersUpright vacuum cleanersCompact vacuum cleanersCanister vacuum cleanersIndustrial/commercial vacuum cleanersBackpack vacuum cleanersVacuum cleaners for hardwood floorsRobotic vacuum cleanersHandheld vacuum cleaners
a vacuum cleaner uses air to create suction. in a vacuum there is no air. Therefore, the aswer is NO.
The vacuum becomes no longer a vacuum.
vacuum-phobia or vacuum-cleaner-phobia
Vacuum lines supply vacuum for various functions.