How long does it take a package of length 1,000 bytes to propagate over a link of distance 2,500 km, propagation speed 2.5 * 108 m/s, and transmission rate 2 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?