An Electron Microscope Operates with Electrons of Kinetic Energy 58

question 29

Multiple Choice

An electron microscope operates with electrons of kinetic energy 58 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)3.57E-20 m
• B)7.69E-13 m
• C)5.10E-12 m
• D)2.28E-10 m
• E)​1.03E-11 m

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Definitions:

Group Dynamics

The study of the behaviors and psychological processes occurring within a social group, or between social groups.

Essentialism

The belief that entities have a set of immutable characteristics that define their essence, often applied to social categories like gender or race.

Group Dynamics

The study of the behaviors, interactions, and psychological processes that occur within and influence the actions of a group.

Therapy

A treatment intended to relieve or heal a disorder, often involving psychological techniques.