How does hardware differ from software?

hardware can be an external tool, whereas software is an internal tool.
hardware performs tasks, whereas software provides instructions.
hardware runs the computer, whereas software performs tasks.
hardware is the brain of a computer, whereas software is the heart.

Technician a says that if a valve is open when a piston rises to the very top of a cylinder, the piston may actually strike the valve head and cause serious engine damage. technician b says if the camshaft is located in the engine block, then the engine is called an overhead valve engine, ohv engine, or an in-block camshaft. who is right? a. b only b. both a and b c. a only d. neither a nor b

What is the power dissipated by a resistor with a current of 0.02 a and a resistance of 1,000 ? a. 200 w b. 20 w c. 0.4 w d. 4 w

What part of the interface displays the external references contained in a selected cell? the status bar the review tab the scroll bar the formula bar