Question

All are examples of mechanical energy except _______.

radio signals sent through space
thunder heard from many miles away
the nuclei of atoms splitting into parts

Answer 1

Step-by-step explanation:

Answer:

the nuclei of atoms splitting into parts

Step-by-step explanation:

Mechanical energy is the energy which is the combined name of kinetic and potential energy.

Radio signals have kinetic energy. So it is an example of mechanical energy.

Thunder also a form of energy which is due to the travelling of sound waves, so it has mechanical energy.

The energy due to the splitting of nucleus is called nuclear energy.

Answer 2

Answer: Radio signals sent through space

Step-by-step explanation:

>Radio signals are electromagnetic signals which can travel through space even in vacuum where no air is absent . Radio signals carry energy in the form of electromagnetic wave .

>Thunder heard from many miles away is due to propagation of sound wave in the air or atmosphere . The sound wave carries energy in the form of mechanical energy which can not propagate in vacuum and requires a medium .

>When nuclei of atoms split into parts they fly away from each other with some speed carrying kinetic energy which is a part of mechanical energy .

Thus mechanical energy is involved in all the given examples expect the case of radio signals sent through space.