The Electron in a Hydrogen Atom Has an Orbital Radius

question 16

Multiple Choice

The electron in a hydrogen atom has an orbital radius of 0.0500 nm. To avoid being pulled into the nucleus by electrostatic attraction, the electron must have an orbital speed of

• A) 7.12 km/s.
• B) 25.2 km/s.
• C) 1.02 × 10⁶ m/s.
• D) 2.25 × 10⁶ m/s.
• E) 5.0 × 10⁸ m/s.

Apply the tests (revenue, profit or loss, assets) to determine which segments must be disclosed separately.

Recognize when additional segments must be disclosed to meet the 75 percent external revenue threshold.

Understand the considerations for identifying operating segments based on internal reporting structures.

Identify which operating segments are reportable under various tests such as the asset test, revenue test, and profit or loss test.

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