Slow Cooker French Dip

Beef chuck roast (2 pounds)

Beef broth (14.5 oz (1 can))

Worcestershire sauce (1/4 cup)

Onion powder (1/2 tsp)

Garlic powder (1 tsp)

Salt (1/2 tsp (or to taste))

Pepper (1/4 tsp (or to taste))

Oregano (1/4 tsp)

Bun (4-5)

Provolone cheese (4-5 slices)