How to calculate distance of submarines in sea and aero plane in sky? Calculating distance of submarine and aero plane in sky can be made by two following ways. Distance of submerged objects or submarines in sea (Sound Navigation and Ranging- SONAR) SONAR is an instrument which uses ultrasonic waves (waves having frequency > 20, 000 Hertz) to detect and locate the submerged objects, submarines etc. in sea. Ultrasonic waves produced from a transmitter are sent towards the distant object under water. When the object comes in the direction of ultrasonic waves, then the waves are reflected back from it. Measuring the time interval t between the instant the ultrasonic waves are sent and received back, the distance s of the object can be calculated by the relation. s= ct/2 Where c is the velocity of ultrasonic waves Calculating distance of submarine and aero plane in sky Distance of aero plane in the sky (Radio Detecting and Rangin...
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