Nuclear Reactions: Determine the missing product X in the following nuclear reaction:
O + neutron ? X + alpha particle
Fill in the blank(s) with the appropriate word(s).
13 is over 6C
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Why is the Moon's surface cratered but Earth's is not?
A. When the dinosaurs died, their remains filled all Earth's craters. B. The Moon's stronger magnetic field attracted more iron asteroids. C. Meteors bounce off Earth's atmosphere. D. Earth's impact craters have been mostly obliterated by erosion and plate tectonics.
Arrange the strong (S), electromagnetic (EM), weak (W), and gravitational (G) forces from weakest to strongest.
A. W, G, EM, S B. W, G, S, EM C. G, W, S, EM D. G, W, EM, S E. W, S, G, EM
A length of piano wire is used to hang a mass from the ceiling. If the total mass of the string is 0.72 g and the mass hung from it is 1850 g, what is the length of the wire, assuming the fundamental frequency when plucked in these circumstances is 1280 Hz?
A. 2.48 cm B. 6.15 cm C. 3.08 cm D. 1.54 cm
Stars X and Y have the same luminosity, but star Y is 10 times as far from Earth as star X. How much brighter will star X appear in our sky than star Y?
A) 10 times B) 100 times C) 1000 times D) 10,000 times E) 100,000 times