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magnitude and direction
all the forces must combine to make something move
Magnitude and direction
Actually, there are four forces; the strong atomic force, the electromagnetic force, the weak atomic force, and gravity.
Two or more forces are balanced if their vector sum is zero. That means they all cancel each other out, and the total result is just as if there were no forces at all.
Two common market forces are supply and demand.
I'm not sure if you mean their common characteristics, or characteristics that they have in common. Some common characteristics are that they have exoskeletons and they are segmented. However, they also have some characteristics that they have in common, and some which no other animals have. One of these characteristics is that they possess biramous appendages, which means legs and other appendages which are forked into two pieces, although some crustaceans lose the minor piece of some legs as they mature. The seoncd thing they all have in common is that all of them first pass through a nauplius larval stage.
magnitude and direction
They all consist of two or more fronts colliding into each other.
All deserts have low precipitation and high evaporation rates.
All angles in both are perpendicular and both have two sets of parallel sides
two charachteristics that all good sources of animal fossils have in common are they occur in fairly large numbers in rock layers and have clearly distinguished charchterisitics
Backbone and an interior skeleton
All forces have direction and size.
Orangutans, chimpanzees and humans are all bipeds, meaning they walk on two feet. They are all mammals and they all evolved from common ancestors.
realism, naturalism and symbolism
The magnitude (size) AND the direction, of all the forces, all affect their combination.