Dr. Amit is online now. 1.Identify the four basic categories of hardware in a microcomputer system. 1. Hard disk, input/output, secondary storage, and display devices. 2. System unit, input/output, secondary storage, and primary storage. 3. System unit, input/output, secondary storage, and communication.
The semi-truck without the trailer weighs around 20,000 lbs. An empty trailer weighs around 12,000 lbs, but it depends on what type of trailer it is. There are hundreds of different configurations. The point is...the maximum legal weight that an 18-wheeler can weigh is 40 tons (80,000 lbs).
16,000 - 20,000 lbs usually for the front part (truck, tractor, cab). But the empty trailer adds several tons more. For example a 53 foot long simple box (van) trailer weighs 10,000-15,000 with nothing in it. So a whole 65 foot long empty system (truck and trailer) weighs over 30,000 lbs.