Answer:
20
Explanation:
number of protons+ number of neutrons= mass of atom
19+n=39
n=39-19=20
number of neutrons=20
Answer:
Russia is the lowest population density in Eastern Europe
Answer:
A moving baseball possesses mechanical energy due to both its high speed (kinetic energy) and its vertical position above the ground (gravitational potential energy).
Explanation:
Answer:
A drainage divide is a ridge that separates one watershed from another
Explanation:
A drainage divide is the natural feature that is dividing the watersheds, or rather it is a ridge of a mountain or hill that is dividing the waters. The drainage divides determine where the water will go, on which side, in which streams and rivers. Some of them are larger, some are smaller, but they all do the same job. Where the waters from a certain watershed will end up though depends on the topography of the terrain, which can make them the waters move in any direction, or better said from higher to lower places. This occasionally gives weird paths of the waters from some watershed, as the watershed can be very close to a big body of water, but the topography moves it away from it, and it ends up in a body of water hundreds or even thousands km away.
