Which of the following types of Universe has no center and no edge?
a. closed b. flat
c. open d. All of the other choices are correct.
d
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How many arcseconds are in one arcminute?
A) 10,000 B) 60 C) 360 D) 100 E) 3600
The sulfur hexafluoride molecule consists of one sulfur atom and six fluorine atoms. The atomic masses of sulfur and fluorine are 32.0 u and 19.00 u, respectively. What mass does one mole of this gas have?
a. 32.0 g b. 51.0 g c. 146 g d. 608 g
The ratio of the change in the cross-sectional area at the location of fracture to the original cross-sectional area is equal to the _____________.
Fill in the blank(s) with the appropriate word(s).
A motor drives a shaft at f 5 10 Hz and delivers P 5 35 kW of power. The allowable shear stress in the shaft is 45 MPa. The minimum diameter of the shaft is approximately:
(A) 35 mm
(B) 40 mm
(C) 47 mm
(D) 61 mm