What wave spectrum identifies the waves in am and fm?

There's really no big physical difference between AM and FM radio waves.

In the USA, commercial broadcast AM radio stations all operate at frequencies between 550 KHz and 1.7 MHz.  Commercial broadcast FM stations operate at frequencies between 87.9 MHz and 108.1 MHz .

So when it comes to AM and FM transmissions for public "education, information, and entertainment" (and selling stuff), the wavelengths of the AM stations are much longer than the wavelengths of the FM stations.  But this really has nothing to do with them being AM or FM.  It's just the place in the radio spectrum where the US government assigns various types of radio communication services.

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.

v=ir = 3x15 =45 v