If an atomic nucleus containing 64 nucleons has a mass density ?, what will be the expected mass density of a nucleus containing 512 nucleons?
A) 2? B) 8? C) 4? D) 16? E) ?
E
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A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes 0.8 s for the wave to travel the 20 m to the opposite tower. If one meter of the rope has a mass of 0.35 kg, find the tension in the tightrope
In the late 18th century, two astronomers, both with the last name of _______________, were the first to attempt to map the shape of the galaxy
Fill in the blank(s) with correct word
When there is a net release of energy in a chemical reaction, it is called a(n) ______________ reaction
a. exothermic b. activation c. endothermic d. combustion
What made most of the oxygen nuclei in the solar system?
A) stars B) Nothing makes elements–oxygen has always been present in the universe. C) the Big Bang D) our Sun E) high energy collisions of dust and cosmic rays