The primary use for tungsten carbide is for _________tools.
Fill in the blank(s) with the appropriate word(s).
cutting
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Viscosity: Motor oil, with a viscosity of 0.25 N ? s/m2, is flowing through a tube that has a radius of 5.0 mm and is 25 cm long. The drop in pressure is 300 kPa. What is the volume of oil flowing through the tube per second?
A. 0.00038 m3/s B. 0.025 m3/s C. 0.0012 m3/s D. 4.7 m3/s E. 7.5 m3/s
The number of impact craters on the slopes of Tharsis volcanoes suggests that they have been inactive
A) since Mars formed 4.6 billion years ago B) for at least a billion years C) for at least tens of millions of years D) only for the last few hundred years
A ball is thrown with an initial speed of 60 m/s at an angle of 30° above the horizontal. What is the ball's horizontal displacement at the end of 4 seconds? Use g = 10 m/s2
A) 240 m B) 60 m C) 120 m D) 210 m E) 140 m
A race track is constructed such that two arcs of radius 80 m at A and 40 m at B are joined by two stretches of straight tracks as in the figure. In a particular trial run, a driver traveled at a constant speed of 50 m/s for one complete lap. In this case, the ratio of the centripetal acceleration at A to that at B is