Starburst galaxies are invisible in the infrared range
Indicate whether the statement is true or false
False
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The characteristic strength of a group of tensile specimens corresponds to a probability of survival equal to _________.
Fill in the blank(s) with the appropriate word(s).
Which of the following can be determined by using the Doppler effect? I. the speed at which a star is moving away from an observer II. the transverse velocity of a star III. the radial velocity of a star IV. the speed at which a car is traveling toward an observer
a. I & IV b. II & III c. II & IV d. I & III e. I, III, & IV
Order these cosmological events in order from earliest to latest.
A) formation of the first atomic nuclei, formation of the first neutral atoms, formation of the first subatomic particles, formation of the first galaxies B) formation of the first subatomic particles, formation of the first atomic nuclei, formation of the first neutral atoms, formation of the first galaxies C) formation of the first galaxies, formation of the first neutral atoms, formation of the first atomic nuclei, formation of the first subatomic particles D) formation of the first subatomic particles, formation of the first neutral atoms, formation of the first atomic nuclei, formation of the first galaxies E) formation of the first neutral atoms, formation of the first subatomic particles, formation of the first atomic nuclei, formation of the first galaxies F) formation of the first atomic nuclei, formation of the first subatomic particles, formation of the first neutral atoms, formation of the first galaxies
On what date/s does the Sun rise exactly due east and set exactly due west?
A. only on June 21 B. only on March 21 C. March 21 and September 22 D. June 21 and December 21