Three Point Charges Are Positioned on the X Axis

question 1

Multiple Choice

Three point charges are positioned on the x axis. If the charges and corresponding positions are +32 μC at x = 0, +20 μC at x = 40 cm, and −60 μC at x = 60 cm, what is the magnitude of the electrostatic force on the +32-μC charge?

• A) 84 N
• B) 12 N
• C) 36 N
• D) 50 N
• E) 48 N

---

Definitions:

Nuclear Medicine

A medical specialty involving the application of radioactive substances in the diagnosis and treatment of diseases.

Radiopaque Substance

A substance that does not allow X-rays to pass through and appears white or light on an X-ray film, used in medical imaging to highlight structures.

Radioactive Isotope

An isotope that exhibits radioactive decay, emitting radiation in the process.

Fluorescence

The emission of light by a substance that has absorbed light or other electromagnetic radiation, usually seen as a different color.