In an Electron Microscope, Electrons Are Accelerated to Great Velocities

question 127

Multiple Choice

In an electron microscope, electrons are accelerated to great velocities. Calculate the wavelength of an electron traveling with a velocity of 7.0 * 10³ kilometers per second. The mass of an electron is 9.1 * 10^-28 g.

• A) 1.0 * 10^-13 m
• B) 1.0 * 10^-10 m
• C) 1.0 * 10^-7 m
• D) 1.0 m

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