How Fast Must a Muon Be Moving If It Looks

question 30

Multiple Choice

How fast must a muon be moving if it looks to an observer at rest that it lived for 2 * 10 ^{- 4} seconds before it decayed when, in fact, it lived for only 2 *10 ^{- 6} seconds in its moving reference frame?

• A) 0.05c
• B) 0.50c
• C) 0.95c
• D) 0.995c
• E) 0.99995c

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Definitions:

Midbrain

Located between the hindbrain and forebrain, an area in which many nerve-fiber systems ascend and descend to connect the higher and lower portions of the brain; in particular, the midbrain relays information between the brain and the eyes and ears.

Parasympathetic Function

A part of the autonomic nervous system responsible for conserving energy and slowing down the heart rate, thus helping the body to relax and recuperate.

Sleep And Arousal

Physiological and neurological states, with sleep being a state of rest and decreased activity, and arousal being a state of being awake and responsive to stimuli.

Pons

A part of the brain located above the medulla oblongata and below the midbrain, playing a crucial role in controlling breathing, communication between different parts of the brain, and sensations such as hearing, taste, and balance.