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.
Fuggin has you covered. They have just bundled the Smok GX350 with the TFV12 and they are throwing in a 120mL bottle of juice for $99.99. Considering the mod goes for $70-85 and the TFV12 goes for $25-30â¦ this is a decent deal. Smok â¦.