The stress across a surface element (yellow disk) is the force that the material on one side (top ball) exerts on the material on the other side (bottom ball), divided by the area of the surface.
Overview. The WR450F retails for $8,290, making it the sixth-most expensive 450cc 4-stroke enduro bike of 2013. It comes equipped with a 449cc engine, which is slightly larger than average for a 4-stroke motor.he WR450F retails for $8,290, making it the sixth-most expensive 450cc 4-stroke enduro bike of 2013.
For under $100, the UNIC UC40 projector features HDMI input, built-in media playback from sources such as USB and SD cards, and an 800Ã480 pixel resolution. Thanks to PandaWill for providing me a sample to review. Click here to view the latest price.