An air traffic controller monitoring radar signals determines than an aircraft is flying at the wrong altitude. She communicates with the airplanes pilot via radio to alert them about this. Which two kinds of waves was the air traffic controller using, and what kinds of waves are they?

Idon't really understand this can you me and show your work.☺☺[ chemistry b] subject [ electron transfer in lonic bonds]grade( 12)

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Describe the forces both attractive and repulsive that occur as two atoms move closer together.