In an Electron Microscope, Electrons Are Accelerated to Great Velocities

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^-7 m
C) 1.0 m
D) 1.0 * 10^-10 m