When U-238 emits an alpha particle, the resulting nucleus has

A) 90 protons.
B) 91 protons.
C) 92 protons.
D) 93 protons.
E) 94 protons.


Answer: A

Physics & Space Science

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A nucleus with binding energy Eb1 fuses with one having binding energy Eb2. The resulting nucleus has binding energy Eb3. What is the total energy released in this fusion reaction?

A. Eb1 + Eb2 - Eb3 B. Eb3 - Eb1 - Eb2 C. Eb3 + Eb1 + Eb2 D. -Eb3 - Eb1 - Eb2 E. One cannot answer without more information.

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Between us and the Galactic Center, the Milky Way has a mass of:

A) several hundred thousand suns. B) one to two million suns. C) 250 million suns. D) 100 billion suns. E) over a trillion suns.

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If you increase the initial speed of a bullet by 10%, the resultant RANGE will increase by what percent (assume air resistance can be ignored)?

A) 5.0% B) 20% C) 10% D) 21% E) 11%

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The division of the geological history of the Earth into sets of distinct intervals is referred to as the geological

A) time scale B) record C) spectrum D) ladder

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