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Disturbances that transfer energy, or waves. Mechanical waves must have a medium to travel.
No. You can not transfer energy through bluetooth.
wave
they transfer energy through sound water and air.
draughts transfer heat energy through convection
they transfer energy through sound water and air.
Convection is the transfer of energy through space.
draughts transfer heat energy through convection
kinetic energy
Radiation is the transfer of energy through a vacuum.
radiations are in the form of waves and waves are the mode of energy transfer.
These disturbances are known as "waves". Examples include compression waves in air or other media (i.e., sound), and electromagnetic waves, which can travel both through matter and through empty space.