The nucleus having the most tightly bound nucleons is

A) hydrogen.
B) iron.
C) lead.
D) uranium.
E) plutonium.


Answer: B

Physics & Space Science

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A 4.00 kg object is moving at 3.00 m/s WEST. It strikes a 6.00 kg that is moving WEST at 2.00 m/s. The objects have a one-dimensional elastic collision in the EAST-WEST direction. The velocity of the 4.00 kg object after the collision is

A. 1.00 m/s WEST. B. 2.80 m/s EAST. C. 1.80 m/s WEST. D. 2.80 m/s WEST. E. 1.80 m/s EAST.

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The theory that inflation occurred in the early universe is incompatible with the theory of relativity

Indicate whether the statement is true or false

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The ionization energy of the hydrogen atom is 13.6 eV. What is the energy of the n = 7 state?

a. 11.7 eV b. –11.7 eV c. 0.28 eV d. –0.28 eV e. 1.94 eV

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A temperature of –65 Kelvin is equivalent to _____ degrees Fahrenheit

a. –576.7 b. 208.0 c. –53.9 d. –338.0

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