The elevation of the end of the steel beam supported by a concrete floor is adjusted by meansof the steel wedgesEandF. The base plateCDhas been welded to the lower flange of the beam, and the end reaction of the beam is known to be 18 kips. The coefficient of static friction is 0.30between two steel surfaces and 0.60 between steel and concrete. If the horizontal motion of thebeam is prevented by the forceQ, determine (a) the forcePrequired to raise the beam, (b) thecorresponding forceQ

The density of a liquid could be found by using

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

What causes the formation of ocean currents?