If the kinetic and potential energy in a system are equal, then the potential energy increases. What happens as
result?
Total energy increases.
Stored energy decreases.
Energy of motion decreases,
© Total energy secreases.

Total energy increases.

Explanation: Total energy is the sum of all different types of energies a body can have. A molecule can have Kinetic energy due to it's random motion, potential energy due to it's bonding with other molecules, rotational kinetic energy due to it's rotation. In this case, total energy is the sum of all these.

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.

a electromagnetic waves