Particles 1, with Charge Q₁ and 2, with a Charge

question 7

Multiple Choice

Particles 1, with charge q₁ and 2, with a charge q₂ are on the x axis, with particle 1 at x = a with and particle 2 at x = -2a. For the net force on a third charged particle, at the origin to be zero q₁ and q₂ must be related by q₂=:

• A) 2q₁
• B) 4q₁
• C) -2q₁
• D) -4q₁
• E) -q₁/4

---

Definitions:

Olds and Milner

Researchers known for their discovery of the brain's reward system through experiments involving electrical stimulation of the brains of rats.

Rats

Rodents commonly used in psychological and medical research due to their physiological and genetic similarities to humans and their predictable behaviors.

Drives

Internal states that motivate the organism to perform actions necessary for survival, such as hunger or thirst.

Contiguity

In psychology, contiguity is the principle that ideas, memories, and experiences are linked when one is frequently experienced with the other, leading to easier recall or association.