Carl runs 100m west he then runs 60m north he then runs 20m east the total distance traveled by carl is and his total displacement is .

   Displacement = 100 meter

   Distance covered = 180 meter.

Explanation:

   Let east represents positive x- axis and north represent positive y - axis. Horizontal component is i and vertical component is j.

  Carl runs 100 m West, Displacement = -100 i

  He then runs 60 m North, Displacement = 60 j

   He then runs 20 m East, Displacement = 20 i

  Total displacement of Carl's running = -100 i + 60 j + 20 i = (-80 i + 60 j) m (Vector)

  Magnitude of displacement =  

  Distance traveled by Carl = 100 + 60 + 20 = 180 m ( Scalar)

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

i need the answer to this too but idk it ; -;