An Alpha Particle (M = 6

question 56

Multiple Choice

An alpha particle (m = 6.7 × 10−²⁷ kg, q = +3.2 × 10−¹⁹ C) has a speed of 20 km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle during this motion. Determine the electric potential difference V_A − V_B.

• A) +4.2 V
• B) −4.2 V
• C) −9.4 V
• D) +9.4 V
• E) −8.4 V

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Definitions:

Neural Message

Information transmitted within the nervous system, typically in the form of electrical and chemical signals across neurons.

Axon

A long, slender projection of a neuron that transmits electrical impulses away from the neuron's cell body to other neurons or to muscles or glands.

Electric Potential

A measure of potential energy per unit charge in an electric field, representing the work required to move a charge from one point to another against an electric field.

Resting State

A period of mental and physical inactivity during which an individual's consciousness is engaged but not focused on the external environment, often used in neuroimaging studies.