Compared to stars within the disk, halo stars
a. orbit at random inclinations to the galactic plane b. orbit at different speeds
c. orbit with paths crossing d. All of the other choices are correct.
d
You might also like to view...
A steel plane truss is loaded at B and C by forces P 5 200 kN. The cross-sectional area of each member is A 5 3970 mm2. Truss dimensions are H 5 3 m and L 5 4 m. The maximum shear stress in bar AB is approx- imately:
(A) 27 MPa
(B) 33 MPa
(C) 50 MPa
(D) 69 MPa
A pint of water (on Earth) is approximately
a. 1 pound. b. 1 gram. c. 1 kilogram. d. 1 quart.
What type of civilization would be able to construct a "Dyson Sphere" around its parent star to capture its radiation?
A) Type III B) Type IV C) Type II D) Type I
Compare
(a) Compare the linear atom density of the [100] and [111] directions in the BCC metal iron, with a lattice parameter of 0.286 nm. (b) Which is the most closely packed direction in the BCC structure? (c) What is the radius of an iron atom if it is assumed that the atoms touch along the most closely packed direction?