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.
Waves can carry a little energy or a lot. They can be short or long. They can be rare or frequent. They can travel fast or slow. Sound waves, light waves, X-rays, microwaves, and ocean waves are but a few examples. All waves, however, share certain basic characteristics. All waves have amplitude, wavelength, and frequency. 1  In order to understand these characteristics of waves, it may help you to represent a wave as a drawing on a graph.