The number of neutrons available to cause fission in a nuclear reactor is adjusted by inserting or withdrawing the ______________
Fill in the blank(s) with correct word
control rods
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Where are neutrons found in the hydrogen atom?
a. nucleus b. cloud surrounding the nucleus c. outside the atom d. None of the other choices are correct.
A knight on horseback holds a 9.0-m lance. The horse can run at 0.75c. (It wins most of its races!) How long will the lance appear to a person that is standing still on the ground as the horse runs past?
a. 6.0 m b. 14 m c. 9 m d. 6.8 m e. 4.5 m
A submarine must travel how fast (with respect to the water) and be pointed in what direction such that it moves 10 m/s directly northward (relative to the earth) if the water moves westward at 5.0 m/s?
What will be an ideal response?
If the mass of a proton is 1.67 × 10^-27 kg, what is the rest energy of the proton? (c = 3.00 × 10^8 m/s and 1 eV = 1.6 × 10^-19 J)
a. 9.4 × 10^8 eV c. 3.7 × 10^8 eV b. 4.1 × 10^8 eV d. 1.2 × 10^8 eV