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Two astronauts are floating close to eac...

Two astronauts are floating close to each other in space. Can they talk to each other without using any special device? Give reasons.

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**Step-by-Step Solution:** 1. **Understanding Sound:** - Sound is a type of wave that is produced by vibrating objects. It travels in the form of longitudinal waves, which means that the particles of the medium through which the sound travels move back and forth in the same direction as the wave. 2. **Requirement of Medium for Sound Propagation:** - For sound to travel, it requires a medium (solid, liquid, or gas). This is because sound waves need particles to vibrate and transfer the energy of the sound. ...
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