In a Head-On Collision, an Alpha Particle (Z = 2)of $8.20 \mathrm { MeV }$

question 48

Multiple Choice

In a head-on collision, an alpha particle (Z = 2) of energy $8.20 \mathrm { MeV }$ bounces straight back from a nucleus of charge $80.0 \mathrm { e. }$ How close were the centers of the objects at closest approach? (1 eV = 1.60 × 10^-19 J, e = 1.60 × 10^-19 C, 1/4??₀ = 8.99 × 10⁹ N ? m²/C²)

• A)2.81 × 10^-14 m
• B)3.39 × 10^-12 m
• C)6.56 × 10^-15 m
• D)2.17 × 10^-14 m

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Definitions:

Efficient Market Hypothesis

The assertion that information travels around the U.S. financial system so fast that stock prices virtually always reflect all available information. The concept implies that technical analysis is useless.

Stock Prices

The cost of purchasing a share of a company at any given time, reflecting the market's valuation of the company.

Publicly Available Information

Information that is not restricted and can be accessed by the general public, often used in the context of financial markets.

Cumulative Feature

A characteristic of preferred stock that allows for the accumulation of unpaid dividends which must be paid out before any dividends are given to common stockholders.