Alpha Particles Are Best Described as

question 47

Multiple Choice

Alpha particles are best described as

• A) neutral particles that weigh approximately one atomic mass unit.
• B) positive particles that are identical to the nucleus of an atom of ⁴He.
• C) electrons ejected at high speeds from a radioactive nucleus.
• D) high-speed particles similar in size to an electron, but oppositely charged.
• E) a form of electromagnetic radiation.

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Definitions:

Exchange Rate

The exchange rate of one currency to another.

Yen

The official currency of Japan, symbolized as ¥ and known in finance as JPY.

Dollar

The official currency of the United States, also used as a standard monetary unit in many other countries.

U.S. Net Capital Outflow

The difference between the purchase of foreign assets by U.S. citizens and the purchase of U.S. assets by foreigners, reflecting the flow of capital from and into the U.S.