Answer:
The height of the sound waves increases
Explanation:
For atoms in the periodic table, the given mass number is the sum of the number of the protons (also called the atomic number) and the number of the neutrons inside its nucleus. Mathematically,
mass number = atomic number + number of neutrons
Substituting,
39 = 19 + n
n = 39 - 19 = 20
Therefore, the answer is not found in the choices.
Let the first car's average speed be x
The second car's speed would be x+5




So the speed of the slower car is 50mph, and the speed of the faster car is 55mph
Nitrogen, oxygen, and argon