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

Physics & Space Science

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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

Physics & Space Science

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

Physics & Space Science

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

Physics & Space Science

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

Physics & Space Science