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    Physics
    Grade-10
    Easy

    Question

    What is the wasted energy when an airplane flies?
     

    1. Electrical
    2. Heat
    3. Sound
    4. motion

    Hint:

    Sound and heat

    The correct answer is: Sound

      • As the speed of the airplane increases, the chemical energy is converted into kinetic energy.
      • As the airplane goes higher, the mechanical energy is changed into gravitational potential energy.
      • While flying, some energy is lost through drag to thermal (heat) energy and sound energy.

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