An important factor in producing and controlling a fission chain reaction is the fact that _________ neutrons are much better a causing fission in uranium-235
Fill in the blank(s) with correct word
slow
Physics & Space Science
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Which of the objects below has an atmosphere consisting mostly of carbon dioxide?
a. Earth b. Mercury c. Earth's Moon d. Venus e. None of the other choices are correct.
Physics & Space Science
Exclusion Principle: Which one of the following is the correct electronic configuration for carbon, which has 6 electrons?
A. 1s2 2s2 2p2 B. 1s1 2p1 C. 1s1 2s2 2p1 D. 1s1 2s1 2p1 E. 1s2 2s2 2p4
Physics & Space Science
You whirl a 2-kg body attached to a 1 meter cord around your head in a nearly horizontal circle with a speed of 4 m/s. The tension in the cord is _________
Fill in the blank(s) with correct word
Physics & Space Science
A radioactive sample has a half-life of 10 min. What fraction of the sample is left after 40 min?
A) 1/2 B) 1/4 C) 1/8 D) 1/16
Physics & Space Science