A Beam of Electrons Moving in the +X Direction Encounters

question 5

Multiple Choice

A beam of electrons moving in the +x direction encounters a potential barrier that is 3.42 eV high and 0.78 nm wide.Each electron has a kinetic energy of 3.41 eV and the electrons arrive at the barrier at a rate of 500 electrons/s (500 electrons every second) .What is the average rate in electrons/s at which electrons pass through the barrier?

• A)435 electrons per second
• B)282 electrons per second
• C)225 electrons per second
• D)176 electrons per second
• E)65 electrons per second

---

Definitions:

Warfarin

A medication used as an anticoagulant to prevent blood clots from forming or growing larger in the blood and blood vessels.

Incident Report

A detailed account of an unexpected event, especially one leading to injury or harm, used to improve safety.

Prescribed Dose

The specific amount of medication or treatment recommended by a healthcare professional to be taken or applied by a patient.

Pinna

The visible part of the ear that is outside the head, which captures sound waves and directs them into the ear canal.