Suppose You Were to Try to Create a Proton-Antiproton Pair

question 3

Multiple Choice

Suppose you were to try to create a proton-antiproton pair by annihilation of two very high-energy gamma rays of the same wavelength heading toward each other. The proton and the anti-proton have the same masses, but opposite charges. What would be the minimum energy needed for each photon? (e = 1.60 × 10^-19 C, ^mproton = 1.67 × 10^-27 kg, c = 3.00 × 10⁸ m/s)

• A) 1.022 MeV
• B) 12.2 MeV
• C) 1880 MeV
• D) 939 MeV
• E) 223 MeV

Recognize the functions and affiliations of federal executive agencies within government departments.

Understand the internal operations and rule types within agencies, specifically procedural rules.

Analyze case outcomes to determine the application of the Freedom of Information Act (FOIA) and its limitations.

Understand the purpose and process of negotiation rulemaking (reg-neg) and its impact on the rulemaking process.

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Definitions:

Pilot Research

An initial study conducted to test the feasibility of a project or experiment before a larger scale study is launched.

Third Variable

A factor that is not directly involved in the hypothesis being tested but may influence the relationship between the independent and dependent variables.

Reverse Causality

A situation in research or analysis where the direction of cause-and-effect is opposite to what is commonly presumed or is being investigated.

A Priori Causal Theory

Knowledge or reasoning based on theoretical deduction rather than empirical evidence, used to speculate about causes.