How Fast Does Light Travel from Proxima Centuri to Earth $3 × 10^8$

question 2

Multiple Choice

How fast does light travel from Proxima Centuri to Earth

• A)4.2 ly
• B)4.2 years
• C)\(3 × 10^8\) m/s
• D)None of the other choices are correct.

---

Definitions:

Protective Tariff

Duties levied on goods brought into a country to safeguard local businesses from overseas rivals by increasing the costs of these imports.

Independent Treasury System

The Independent Treasury System, established in the 1840s, was a system where the U.S. government kept its funds in its own vaults rather than in banks, aiming for financial stability.

Constitutional Amendments

Changes or additions made to the United States Constitution, requiring a specific process for approval and ratification.

Checks And Balances

A fundamental principle of the United States Constitution that ensures no single branch of government becomes too powerful, with each branch having some measure of influence over the others.