22. (2) excessive rolling pressure caused by dynamic loads that dislodge surface a)galing fatigue 23. (2) creep is: oscillatory motion b) slow plastic deformation over y c) weird person stalking you 24. (2) a 400 rpm 02-saries deep groove ball bearing under 8 kn radial and 2 kn axial loads must last 10,000 hours with 99% reliability. select one with bore. b) 40 c) 90 none of these 25. (2) how many rolling elements are present inside a hydrodynamic bearing? b) 13 é) none of these 26. a 200 rpm bearing under 11 kips must last 20,000 hours with 99% reliability. dynamic load select one with rating a) 240 kips d) 10,400 kips e none of these 27. (2) angular contact thrust bearings. b react chucking loads c) must be perfectly aligned d) produce no noise

The ballistic pendulum was invented in 1742 by english mathematician benjamin robins. it consists of an initially stationary pendulum that moves after being struck by a bullet, and it is used to measure the original velocity of the bullet. the known variables are the bullet's mass m, the pendulum's mass m, and the height to which the block and bullet swing, determined by the length of the pendulum l and final angle θ. two principles of physics are necessary to solve for the bullet's original velocity. what are these principles? conservation of momentum and newton's third law conservation of energy and conservation of angular momentum grade summary deductions 0% potential 100% conservation of momentum and newton's second law. newton's second law and conservation of angular momentum. conservation of energy and newton's third law conservation of momentum and conservation of angular momentum. conservation of momentum and conservation of energy conservation of energy and newton's second law.

Aforce of 34n stretches a very light ideal spring 0.73 m from equilibrium, what is the force constant (spring constant) of the spring? (a) 47n/m (b) 38n/m (c) 53n/m (d) 25n/m

An object's buoyant force and weight mean the same thing.a. trueb. false