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.
The new subcompact 2015 Fit, rated at 36 mpg combined, carries a starting price of $16,315 including delivery--which would have made the smaller 42-mpg Insight an even tougher sell at $3,000 more. In hybrid technology, the company has refocused its efforts on a two-motor hybrid system for mid-size and larger vehicles.