Some drive letters, such as the letter that is typically used with the primary hard drive, are usually consistent from computer to computer and do not change even if more storage devices are added to the computer.

that without the operating systems you would have to control and synchronize computer hardware.

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.

lick on your profile and select log out on that device