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?

What is the ph of a solution with a 1.50 × 10−9 m hydroxide ion concentration?

Which best describes how johannes kepler developed his laws of planetary motion

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.