AC current, low voltage.
Chemical
The use ful energy from headphones would be sound , the wasteful would be battery power.
batteries use chemical potential energy to make electricity. electrical energy is converted into light/electromagnetic energy by the screen, and sound energy by the headphones.
the form of energy the body use is food
batteries use chemical potential energy to make electricity. electrical energy is converted into light/electromagnetic energy by the screen, and sound energy by the headphones.
no
kinetic energy
Solar energy
Chemical energy
"The program allows the user to change speech to text. You do not need headphones to use Dragon NaturallySpeaking. However, if you do not use headphones it will require you to use a microphone."
Boats are not energy, they are a form of transportation. They use mainly chemical and wind energy as a form of propulsion.
Your headphones can get ruined if you use them in the rain only if they get in contact with the water.
Headphones do not use batteries, they use a power source such as an iPod or mobile phone.