No. Broken Hill is a mining city in the far west of New South Wales, while Sydney is the capital city of NSW and is on the east coast. The flight distance between the two centres is 940km.
The road distance between Broken Hill in far western New South Wales to Newcastle on the central coast is 1,405 km. Driving time is an estimated 13 hours, so is best spread over two days.
Broken Hill is a mining town in the far west of New South Wales. It is most famous for silver, lead and zinc, though other metals are also mined there.