Why would you expect alpha particles to be less able to penetrate materials than beta particles of the same kinetic energy?

A. Alpha particles carry twice the electric charge.
B. Alpha particles pick up electrons to become harmless helium atoms.
C. Alpha particles move much slower for a given kinetic energy.
D. Two of the above answers are reasonable.


Answer: D

Environmental & Atmospheric Sciences

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The salinity of seawater remains constant because

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Ironically, India's violent war of independence has been followed by a peaceful postcolonial history

Indicate whether this statement is true or false

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