One hundred meters of a certain type of wire has a resistance of 7.2 
What is the resistance of 2.5 m of this wire?
A. 18
B. 1.8
C. 0.18
D. 3.0
E. 0.30
C. 0.18
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What is the process in which a nucleus of an atom breaks up, emitting subatomic particles and/or energy?
a. radioactive decay b. radioactive isotyping c. unstable atomic nucleus d. electron release e. free radical release
Alpha decay reduces the atomic and mass numbers respectively by how much?
A) 4, 2 B) 2, 2 C) 2, 4 D) 4, 4 E) 2, 6
A typical galaxy is a ________
A) relatively small, icy object orbiting a star B) collection of a few hundred million to a trillion or more stars, bound together by gravity C) system consisting of one or a few stars orbited by planets, moons, and smaller objects D) large, glowing ball of gas powered by nuclear energy E) nearby object orbiting a planet
If the following generic atom were to undergo ionization, what would be the charge of most likely product?
A) +3 B) -3 C) -5 D) 8 E) would probably not ionize