11. Each mode allows the rear offset of the vehicle to be confined within a fixed distance of travel. 12. And fixed distances between trains, though they may slow the system down, are no guarantee of safety. 13. Non-moving objects at a fixed distance from the antenna always return a signal after the same delay. 14. The objective is usually to cover a fixed distance in the least amount of time ( e . g. 15. Two large brick homes were built at fixed distances to conceal the purchases of bricks needed for the tunnel. 16. Things are constantly moving beyond the cosmological horizon, which is a fixed distance away, and everything becomes homogeneous. 17. This sequence converges because each object is a fixed distance away from the edge of the non-zero region. 18. This was an omnidirectional aerial located a fixed distance from the loops about 1 / 2 of a wavelength away. 19. Drive some fixed distance at some fixed rpm, for each gear ( try 1 Km at 2000 rpm ). 20. At twice the speed the work ( resulting in displacement over a fixed distance ) is done twice as fast.