If you want to obtain a Class E license before you turn 18, you must . A. get a perfect score on the knowledge exam
B. have perfect attendance at school
C. hold a learner's license for 12 months with no moving violations
D. hold a learner's license for 12 months with no more than one moving violation

What precautions should you take to prevent injuries when dealing with heavy loads?

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

In modern manufacturing, which types of metal chips would be undesirable and why ? ?