In some cases, the action is integrated along the path followed by the physical system.
The person who has that model is a physical system.
Q. What must a physical system be such that it can act on its own in an environment?
There are many different physical systems that could give the same behavioral results.
They have been found to be true for many other physical systems.
Attack trees have also been used to understand threats to physical systems.
Only a few physical systems could take a bullet and survive.
It is used in science to describe how much potential a physical system has to change.
In other words, the computer model runs at the same rate as the actual physical system.
Even more, they take the same values for very different physical systems.
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