Resonance in air columns is used in a variety of musical woodwind instruments. Something like a flute for example uses resonance to make sound. Not sure what instruments you are talking about unless you provide a list.
The correct response would be 3. The alkaline earth metals would tend to lose its valence electrons, in this case 2 of them at different energy levels, to form the same respective ion, which is +2.
Answer:
Bombardment by asteroids
Explanation:
All of the other ones explain themselves
Answer:
A. Jordan is on a moving train. He throws the ball toward the front of the train
Explanation:
