6. Radio towers P and Q, 200 kilometers apart, are situated along the coast with P due west of Q. Simultaneous radio signals are sent from each tower to a ship which is due north of Q. If the signal from P arrives at the ship 500 us after the signal from Q, how far is the ship from the coast (and consequently, tower Q)? Note: Radio signals travel at 300 m/us. t + 500 us ; 0.3t + 150 km SHIP D tus ; 1 0.3t km D2 X P(-100,0) Q(100,0) - - - - K