Although electrons do not normally have precise velocities, you can cause an electron to have a (fairly) precise velocity by
A) measuring both its position and velocity at an earlier time.
B) measuring its frequency.
C) measuring its velocity.
D) measuring its position.
E) measuring the force it exerts on another electron.

Question

Quizplus · Accepted Answer

Measuring an electron's velocity directly allows you to determine its velocity with a certain degree of precision, in accordance with the principles of quantum mechanics.

Although Electrons Do Not Normally Have Precise Velocities, You Can