Hydrogen Atom: What Is the Minimum Speed Needed by a Ground-State

question 21

Multiple Choice

Hydrogen atom: What is the minimum speed needed by a ground-state hydrogen atom for its kinetic energy to be enough to ionize the atom in a collision? (1 eV = 1.60 × 10^-19 J, m_h ≈ m_proton = 1.67 × 10^-27 kg)

• A) 44.2 km/s
• B) 21.7 km/s
• C) 66.5 km/s
• D) 113 km/s
• E) 51.0 km/s

---

Definitions:

Fair Value

The price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

Agricultural Activities

Operations involved in the cultivation of land, raising and managing livestock, and growing crops, intended for the production of food and raw materials.

AASB 141

AASB 141 refers to the Australian Accounting Standards Board's standard on Agriculture, outlining how to account for agricultural activities in financial statements.

IAS 41

An International Accounting Standard that deals with agriculture, guiding the accounting for agricultural activity.