Galactic cannibalism refers to
a. binary galaxies.
b. the merging of galaxies.
c. galaxies drawing in gas from the intergalactic medium.
d. the destruction of a galaxies globular clusters by the galaxies nucleus.
e. none of these
B
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In a tensile specimen with uniform strain, the true strain is equal to the natural log of 1 plus the _____________.
Fill in the blank(s) with the appropriate word(s).
Radio waves, of sufficient frequency, pass through which of the following ion layers?
a. C b. D c. E d. F
You roll a ball off a table and at the same time drop a second ball straight down from the edge of table. The second ball reaches the ground ____________ the first ball reaches the ground
a. before b. at the same time that c. after d. before or after, depending on the masses, e. cannot be determined
What is the velocity of the wave in the above figure?
The following figure is a graph of a wave at a fixed position.
The following figure is a graph of the same wave at a fixed time.
A. 150 m/s
B. 200 m/s
C. 250 m/s
D. 300 m/s
E. 450 m/s