A Positron and an Electron, Each with a Rest Mass

question 37

Multiple Choice

A positron and an electron, each with a rest mass of 0.511 MeV/c² and traveling at 50% the speed of light towards one another, annihilate. How much energy, in MeV, is released?

• A) 1.36 MeV
• B) 1.18 MeV
• C) 1.02 MeV
• D) 0.89 MeV
• E) 1.53 MeV

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Definitions:

Compulsion

Compulsion is a psychological condition characterized by the irresistible urge to perform specific acts repeatedly, often against the individual’s conscious wishes, as seen in disorders like Obsessive-Compulsive Disorder (OCD).

Compulsions

Repetitive behaviors or mental acts that an individual feels driven to perform in response to an obsession or according to rigidly applied rules.

Obsessions

Persistent, unwanted thoughts, images, or urges that cause significant anxiety or distress.

Motor Impulses

Nerve signals that initiate muscle contractions, leading to voluntary or involuntary movements.