How Fast Must a Nonrelativistic Electron Move So Its De

question 37

Multiple Choice

How fast must a nonrelativistic electron move so its de Broglie wavelength is the same as the wavelength of a 3.4-eV photon? (m_el = 9.11 × 10^-31 kg,c = 3.00 × 10⁸ m/s, 1 eV = 1.60 × 10^-19 J)

• A)2000 m/s
• B)1900 m/s
• C)1700 m/s
• D)1600 m/s
• E)1400 m/s

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Definitions:

Variances From Standard

The differences between actual costs and the standard (expected) costs set by a company for its products or processes.

Finished Goods Account

An accounting ledger where the value of a company's inventory of products that are complete and ready for sale is recorded.

Wage Rate

Wage rate refers to the standardized amount of compensation paid to employees for their labor, either per hour, day, or piece.

Standard Wage Rate

A predetermined rate of pay for a particular job or task, often used in budgeting and cost control to standardize labor costs.