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Intelligence.
heat energy
chemical
At first SOUND energy converts to ELECTRICALenergy which once again converts to SOUND energy.
A machine that converts one form of energy into another form is called a transducer.
A furnace or a burner.
heat
An engine converts energy into mechanical motion.
fan converts electric energy into magnetic and further mechanical energy
It converts potential energy (source) to kinetic energy (product)
A hydroelectric dam converts part of the kinetic energy of falling water to electrical energy.
An internal combustion engine converts chemical energy into Thermal Energy, and converts thermal energy into mechanical energy via the pistons, connecting rods, and crankshaft .