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 impreza wrx wrx sti is a small all wheel drive rally car with a turbocharged boxer engine for low center of gravity for under 20k you can buy the rugged second generation sedan or wagon or the softer and larger third generation sedan or hatchback wrxord mustang gt 2003 2011 this iconic pony car is widely available and we even found a few svt cobra and shelby models for under $ 20000 the mustang is more of a straight line power muscle car with 2 2 seating although it handles well even with the solid rear axle in the back