Lubrication of moving parts.
the crank shaft whips the oil into a froth… the froth does not lubricate the moving parts… the moving parts try to stop moving… the end
Motor oil is used to lubricate the internal parts, the close tolerance and extreme heat necessary for combustion require a thin film of lubrication to keep all the parts moving smoothly.
Assuming you mean a data-storage device (for use with computers) then the most clear cut answer would be a CD-ROM or a DVD-ROM, neither of which have any moving parts by themselves. The disc-reader however would have moving parts which may negate the idea of a stationary storage device.Flash memory is another form of storage which is commonly found in USB drives and small electronics. It has no moving parts.
Pencil lead applied to the moving parts will improve performance by reducing friction. This may or may not increase the speed of the motor for a given power supply.
A brushless electric motor has fewer moving parts. That in turn means that there are fewer things which can break or develop flaws. Howstuffworks.com has a more thorough explanation of the process.
cephalocaudal means along the vertical axis of the human body
Changes eletrical enegry to mechanical energy. Is found many appliances with moving parts, like a vacum cleaner or a blender.
A flash memory device such as a USB or SD card or an SSD (Solid State Storage) device
Motor oil is lubricant used for internal combustion engines. Motor oil serves several important functions in an engine. It carries heat away from the engine as it lubricates moving parts and helps to prevent corrosion.
what is a solid-state media with no moving parts
the clock that was invented with no moving parts is a sundial