The Wavelength of an Electron Whose Velocity Is 1

question 129

Multiple Choice

The wavelength of an electron whose velocity is 1.7 × 10⁴ m/s and whose mass is 9.1 × 10^{- 28} g is
__________ m.

• A) 4.3 × 10^{- 8}
• B) 12
• C) 2.3 × 10⁷
• D) 4.3 × 10^{- 11}
• E) 2.3 × 10^{- 7}

---

Definitions:

Labor Efficiency Variance

The variance between the number of hours actually worked and the anticipated standard hours, times the normal rate per hour.

Labor Rate Variance

A metric used to measure the difference between the actual rate paid to workers and the expected (or standard) rate.

Direct Labor

The labor cost attributed directly to the production of goods or services.

Standard Cost

A predetermined cost of manufacturing a single unit or a number of units of a product, calculated for managerial accounting purposes.