Two stations working with the Ethernet 10 Mbp half duplex protocol are separated by the link shown in the figure. Calculate the allowable length of the second fragment so that the transmitting system can detect the collision. Give the result in meters, rounding to the nearest whole number,

delay 4 bytes \begin{tabular}{ll} 1500m & ?m \\ \hline v=200000 \\ km/s & v=250000 \\ km/s \end{tabular}