Physical components that make up your computer are known as hardware.
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yes
There are 2 physical components of a computer. Software and Hardware. For great example of each go to: http://www.slideshare.net/Amitchandra.5681/components-of-computer-2-presentation
If your question is whether registry is physical in computer processor, the answer is no.
Hardware is something you can touch. So it is the physical components of the computer.
Hardware
All of them would be classified under "hardware" although the other devices connected to the computer would be classified in the subcategory "peripherals".
A physical firewall, router, modem. (if this is for a class then you might have to argue this point, a physical firewall is a piece of equipment but it is still software that does everything.) A lock on the computer case.
``hard ware``
a computer is a chemical change as it is a machine.
A motherboard is the physical arrangement in a computer that contains computers basic circuitry and components.
The physical aspects of a computer, often referred to as hardware, include components such as the central processing unit (CPU), memory (RAM), storage devices (HDD or SSD), motherboard, power supply unit, and peripheral devices like monitors, keyboards, and mice. These components work together to enable the computer to process data, run applications, and communicate with other devices. Additionally, the physical casing or chassis houses and protects these components while providing ports and connections for peripherals. Overall, the physical aspects are essential for the computer's functionality and performance.