An Electron Microscope Operates with Electrons of Kinetic Energy 100

question 12

Multiple Choice

An electron microscope operates with electrons of kinetic energy 100 keV. What is the wavelength of these electrons? Assume this speed is not relativistic. (h = 6.63 *10 ^{- 34} J.s, c = 3.00 * 10⁸ m/s, 1 eV = 1.60 *10 ^{- 19} J, and m_e = 9.11 *10 ^{- 31} kg)

• A) 5.49 *10 ^{- 12} m
• B) 7.14 *10 ^{- 11} m
• C) 9.28*10 ^{- 10} m
• D) 3.88 *10 ^{- 12} m

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Definitions:

Unconditional Positive Regard

A therapeutic approach developed by Carl Rogers emphasizing an accepting, empathetic environment to facilitate clients' growth.

Personal Failings

Individual weaknesses or shortcomings that affect one's behavior, decisions, or performance in various aspects of life.

Nonjudgmentally Accepts

An approach to experiences and emotions that involves acknowledging their presence without assessing them as good or bad, often used in mindfulness and therapeutic settings.

Empathic Understanding

Empathic Understanding involves fully comprehending and sympathetically relating to the feelings, thoughts, and experiences of another individual.