A -scale model of a tractor–trailer is to be tested in a wind tunnel. If the maximum highw...

A -scale model of a tractor–trailer is to be tested in a wind tunnel. If the maximum highway speed of the vehicle is 65 mph, what is the maximum speed that should be used in a wind tunnel test? If the wind tunnel is at sea level and the actual truck is to be used in Denver, how does that change the velocity that should be used in the wind tunnel?