Two Identical Particles, Each with a Mass of 2

question 76

Multiple Choice

Two identical particles, each with a mass of 2.0 μg and a charge of 25 nC, are released simultaneously from rest when the two are 4.0 cm apart. What is the speed of either particle at the instant when the two are separated by 10 cm?

• A) 7.3 m/s
• B) 9.8 m/s
• C) 9.2 m/s
• D) 6.5 m/s
• E) 4.6 m/s

---

Definitions:

Thoracic Cage

The bony and cartilaginous structure forming the skeleton of the chest, including ribs, sternum, and thoracic vertebrae, protecting vital organs.

Ribs

A series of curved bones that form the protective cage around the chest, supporting the upper body and protecting vital organs.

Sternoclavicular Joint

The joint connecting the clavicle (collarbone) to the sternum (breastbone) at the base of the neck.

Manubrium

The broad upper part of the sternum, with which the clavicles and the first two ribs articulate.