Labor rates must take into account both the base labor paid to teh mechanic plus the following factors: 1  Mechanics overhead costs - hand tools he usually has to provide. 2  Shop overhead including many consumables, lights, compressors, ramps, lifts, large equipment like alignment and diagnosis tools, cleaning facilities, bathrooms and water.
A wave is a way in which energy travels from one place to another. There are many kinds of waves, such as water waves, sound waves, light waves, radio waves, microwaves and earthquake waves. All waves have some things in common.
Let's contrast that with a mechanical wave. A mechanical wave involves the transfer of mechanical energy into and through a medium. Sound waves (which travel through air) and water waves (which move through water) are mechanical waves. They cannot travel without a medium through which to move. 11 people found this useful.