My windshield wiper just stopped working I live in seattle wa. I can still heart the motor but winning when I turn up the speed but no motion at all I think a piece broke not sure can you help?

Sometimes it is.. sometimes it isn't...

Depends on WHAT kind of car it is.

Generally for all cars, the moving parts under the cowl are called the wiper transmission.
Several arms that pivot in a swinging motion driven by the wiper motor.
One of them, a major arm, has become detached or broken.
This is not a major repair, so go get it looked at and you may be surprised how inexpensive this repair might be.
We already know it's not electrical.