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.
When waves move through a substance, they only move the particles of the substance backwards and forwards (longitudinal) or side to side (transverse) as the wave passes.aves transmit energy without transmitting matter. This means that waves can move energy (or information) from one place to another without moving any substance (stuff) from one place to another. The amount of energy that a wave has depends on its amplitude.