What are redshift surveys designed to show?
What will be an ideal response?
Using redshifts to find distances to individual galaxies, we can use them to create 3-D models of the distributions of galaxies in space.
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A nonprismatic cantilever bar has an internal cylindrical hole of diameter d/2 from 0 to x, so the net area of the cross section for Segment 1 is (3/4)A. Load P is applied at x, and load 2P/2 is applied at x 5 L. Assume that E is constant. The length of the hollow segment, x, required to obtain axial displacement ? 5 PL/EA at the free end is:
(A) x 5 L/5
(B) x 5 L/4
(C) x 5 L/3
(D) x 5 3L/5
The hydrosphere covers about 50% of the Earth's crust
Indicate whether the statement is true or false
Except for the Local Group, galaxies seem to be isolated and randomly in space
Indicate whether the statement is true or false
A glass plate having an index of refraction is 1.66 is immersed in a certain alcohol. The surface of the glass is inclined at an angle of 44° with the vertical
When a horizontal ray in the glass strikes the interface, you observe that it is at the critical angle. What is the index of refraction of the alcohol? A) 1.15 B) 1.13 C) 1.11 D) 1.09 E) 1.17