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Answer: (i) armed forces : Echoes can be used from the armed forces to acquire the brand new firearm status away from adversary

Answer: (i) armed forces : Echoes can be used from the armed forces to acquire the brand new firearm status away from adversary

In the event your rate out of sound is actually 334 ms-step step 1, calculate time in he hears a mirror

  1. army,
  2. geologists,
  3. fishermen.

Answer: t = 0

Radar a device is used to get an enemy air-pastime ship. (ii) geologists : Echoes are utilized of the geologists getting mineral to generate leads. (iii) fishermen : for locating fishes ultrasonic surf try delivered on the liquid.