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.
Tuner cars built to order by specialty shops? High-end classics? Here, we've stuck to new regular-production cars offered in the U.S. market for the 2015 model year. All price information is from Edmunds.com. Image source: Ferrari. 10. Ferrari 458 Italia The entry level model from Fiat Chrysler's most hallowed brand starts at just over $239,000. But like all Ferraris (and all of the cars on this list), it can be optioned up substantially from there. Prefer the convertible version?