Match the following phrases with their purpose (some may be used more than once, and some may not be used): lubrication avoid contact of dis-similar metals provide material stiffness minimize surface contact, such as in vibrating surfaces a. design against corrosion b. design against temperature effects c. design against fatigue d. increase resonant frequency to a value above the use band e. design against wear

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p