Transmission-and-Propagation-Delay

This elementary problem begins to explore propagation delay and transmission delay, two central concepts in data networking. Consider two hosts, A and b, connected by a single link of rate R bps. Suppose that the two hosts are separated by m meters, and suppose the propagation speed along the link is s meters/sec. Host A is to send a packet of size L bits to Host B. Express the propagation delay, d_prop, in terms of m and s in seconds