Answer:
[tex]x = 3.84\times 10^{5}\,km[/tex]
This delay affect conversations in the sense that recipient will be receive the message just 2.56 seconds after the message was sent.
Explanation:
The laser pulse has an ondulatory nature as electromagnetic wave, which can travel in the void. Speed of light is constant and distance between Earth and the Moon is:
[tex]x = 0.5\cdot c\cdot \Delta t[/tex]
[tex]x = 0.5\cdot (3\times 10^{5}\,\frac{km}{s})\cdot (2.56\,s)[/tex]
[tex]x = 3.84\times 10^{5}\,km[/tex]
This delay affect conversations in the sense that recipient will be receive the message just 2.56 seconds after the message was sent.
