What happens to water that flows out of a pipe at constant pressure (or constant flow rate), and then enters a restriction in the pipe (goes from a fat pipe to a thin pipe, but the pressure in the fat part of the pipe stays the same:

a. it stays at th same pressure and velocity

b. the velocity goes up and the pressure goes down

c. the velocity goes down and the pressure goes up

d. the velocity goes up and the pressure goes up

e. the velocity goes down and the pressure goes down

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