Iron is the most stably bonded atomic nucleus
Indicate whether the statement is true or false
TRUE
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"Seeds" around which galaxies, clusters and walls grew may have been ___________ before inflation and recombination
a. caused by hot dark matter b. caused by baryons c. the result of the separation of the electromagnetic and weak forces d. the result of freezing water molecules shortly after the Universe became transparent to photons e. caused by initially tiny quantum mechanical fluctuations in space-time
A spring-powered dart gun is un-stretched and has a spring constant 16.0 N/m. The spring is compressed by 8.00 cm and a 5.00 gram projectile is placed in the gun. The velocity of the projectile when it is shot from the gun is
A. 2.04 m/s. B. 2.75 m/s. C. 3.50 m/s. D. 3.75 m/s E. 4.53 m/s.
The tallest volcano in the solar system is Mauna Kea, when measured from its base on the ocean floor to its highest point
Indicate whether the statement is true or false
According to the HST data, very distant (and early) galaxies tend to be
A) smaller, bluer, and more irregular than modern ones. B) redder, due to the recession of the universe. C) larger and bluer that modern galaxies. D) nothing but quasars. E) very well formed into clusters of nothing but spirals.