How long does it take a packet of length $3,000$ bytes to propagate over a link of distance $3,5000$ km$,$ propagation speed $2\mathrm{.}4*108$ m$/$s$,$ and transmission rate $16$ Mbps$?$ More generally, how long does it take a packet of length L to propagate over a link of distance d$,$ propagation speed s$,$ and transmission rate R bps$?$ Does this delay depend on packet length? Does this delay depend on transmission rate?