In particular, a maximum speed of sound has been established—exceedingly high but definite—and such stars may be able to grow more massive than was previously thought. Like any substance, neutron ...

A person fires a starting pistol. A distant observer stood 200 metres away (measured using a 20 m tape measure or trundle wheel) records the time between seeing the flash of light from the ...

The wave equation is a very important formula that ... or \(3\times 10^{8}m\,s^{-1}\). The speed of sound in air is \(340 m\,s^{-1}\). The speed of light and sound changes in different materials.