Answer: Density is defined as the mass per volume of a substance. Thus, air density is defined as the mass of air per unit volume. Using... Air pressure, or atmospheric pressure, is defined as the weight of air in Earth's (or another planet's) atmosphere.
Explanation:
Answer:
Explanation:
f
=
v
λ
where v is the velocity of the wave
λ
is the wavelength.
The nucleus is always positive since thats where the protons are located and the neutrons have no charge....
Answer: A
Explanation: The amount of work done by Joe is equal to the amount of work done by Bob, because both have the same weight, same bicycle, cycling the same road and started the same time but the average power exerted by Joe is greater than that of Bob because Joe climbed a mountain while Bob passed a lower grade road.